Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
10.52
2.
15.265
3.
29.39986
4.
52.758
5.
24.158
6.
24.5
7.
70.16096
8.
12.3496
9.
18.14475
10.
59.8720
11.
9.563
12.
49.7
13.
7.9254
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 2 × 5.26 =
1
0
.5
2
2) 7.1 × 2.15 =
1
5
.2
6
5
3) 5.222 × 5.63 =
2
9
.3
9
9
4) 9.77 × 5.4 =
5
2
.7
5
8
5) 2.57 × 9.4 =
2
4
.1
5
8
6) 5 × 4.9 =
2
4
.5
7) 7.528 × 9.32 =
7
0
.1
6
0
9
8) 4.3 × 2.872 =
1
2
.3
4
9
6
9) 9.75 × 1.861 =
1
8
.1
4
4
7
10) 6.4 × 9.355 =
5
9
.8
7
2
0
11) 1.31 × 7.3 =
9
.5
6
3
8
6
6
5
12) 7 × 7.1 =
4
9
.7
13) 1.554 × 5.1 =
7
.9
2
5
4
14.
52.580
14) 5.5 × 9.56 =
5
2
.5
8
0
15.
73.9498
15) 7.867 × 9.4 =
7
3
.9
4
9
16.
5.27
16) 1 × 5.27 =
5
.2
7
17.
8.784
18.
15.39604
19.
10.8336
20.
29.22519
8
17) 6.1 × 1.44 =
8
.7
8
4
18) 3.181 × 4.84 =
1
5
.3
9
6
0
19) 2.4 × 4.514 =
1
0
.8
3
3
6
20) 3.39 × 8.621 =
2
9
.2
2
5
1
Math
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Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
10.52
2.
15.265
3.
29.39986
4.
52.758
5.
24.158
6.
24.5
7.
70.16096
8.
12.3496
9.
18.14475
10.
59.8720
11.
9.563
12.
49.7
13.
7.9254
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 2 × 5.26 =
1
0
.5
2
2) 7.1 × 2.15 =
1
5
.2
6
5
3) 5.222 × 5.63 =
2
9
.3
9
9
4) 9.77 × 5.4 =
5
2
.7
5
8
5) 2.57 × 9.4 =
2
4
.1
5
8
6) 5 × 4.9 =
2
4
.5
7) 7.528 × 9.32 =
7
0
.1
6
0
9
8) 4.3 × 2.872 =
1
2
.3
4
9
6
9) 9.75 × 1.861 =
1
8
.1
4
4
7
10) 6.4 × 9.355 =
5
9
.8
7
2
0
11) 1.31 × 7.3 =
9
.5
6
3
8
6
6
5
12) 7 × 7.1 =
4
9
.7
13) 1.554 × 5.1 =
7
.9
2
5
4
14.
52.580
14) 5.5 × 9.56 =
5
2
.5
8
0
15.
73.9498
15) 7.867 × 9.4 =
7
3
.9
4
9
16.
5.27
16) 1 × 5.27 =
5
.2
7
17.
8.784
18.
15.39604
19.
10.8336
20.
29.22519
8
17) 6.1 × 1.44 =
8
.7
8
4
18) 3.181 × 4.84 =
1
5
.3
9
6
0
19) 2.4 × 4.514 =
1
0
.8
3
3
6
20) 3.39 × 8.621 =
2
9
.2
2
5
1
Math
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1-10 95 90 85 80 75 70 65 60 55 50
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Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
18.82
2.
36.4
3.
44.96
4.
21.912
5.
14.0
6.
15.2
7.
6.2
8.
9.15
9.
6.52
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 2 × 9.41 =
1
8
.8
2) 7 × 5.2 =
3
6
.4
3) 8 × 5.62 =
4
4
.9
6
4) 2.4 × 9.13 =
2
1
.9
1
5) 5 × 2.8 =
1
4
.0
6) 2 × 7.6 =
1
5
7) 1 × 6.2 =
6
.2
8) 5 × 1.83 =
9
.1
5
10.
23.85123
9) 2 × 3.26 =
6
.5
2
11.
28.132
10) 7.977 × 2.99 =
2
3
.8
5
1
12.
46.368
11) 5.2 × 5.41 =
2
8
.1
3
2
13.
13.18905
2
2
.2
2
3
12) 6.3 × 7.36 =
4
6
.3
6
8
13) 4.977 × 2.65 =
1
3
.1
8
9
0
5
14.
17.23157
14) 7.591 × 2.27 =
1
7
.2
3
1
5
7
15.
13.6344
15) 1.482 × 9.2 =
1
3
.6
3
4
4
16.
14.5750
16) 6.625 × 2.2 =
1
4
.5
7
5
0
17.
46.26657
18.
17.15
19.
33.6
20.
49.8
17) 6.489 × 7.13 =
4
6
.2
6
18) 5 × 3.43 =
1
7
.1
5
19) 8 × 4.2 =
3
3
.6
20) 6 × 8.3 =
4
9
.8
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Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
18.82
2.
36.4
3.
44.96
4.
21.912
5.
14.0
6.
15.2
7.
6.2
8.
9.15
9.
6.52
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 2 × 9.41 =
1
8
.8
2) 7 × 5.2 =
3
6
.4
3) 8 × 5.62 =
4
4
.9
6
4) 2.4 × 9.13 =
2
1
.9
1
5) 5 × 2.8 =
1
4
.0
6) 2 × 7.6 =
1
5
7) 1 × 6.2 =
6
.2
8) 5 × 1.83 =
9
.1
5
10.
23.85123
9) 2 × 3.26 =
6
.5
2
11.
28.132
10) 7.977 × 2.99 =
2
3
.8
5
1
12.
46.368
11) 5.2 × 5.41 =
2
8
.1
3
2
13.
13.18905
2
2
.2
2
3
12) 6.3 × 7.36 =
4
6
.3
6
8
13) 4.977 × 2.65 =
1
3
.1
8
9
0
5
14.
17.23157
14) 7.591 × 2.27 =
1
7
.2
3
1
5
7
15.
13.6344
15) 1.482 × 9.2 =
1
3
.6
3
4
4
16.
14.5750
16) 6.625 × 2.2 =
1
4
.5
7
5
0
17.
46.26657
18.
17.15
19.
33.6
20.
49.8
17) 6.489 × 7.13 =
4
6
.2
6
18) 5 × 3.43 =
1
7
.1
5
19) 8 × 4.2 =
3
3
.6
20) 6 × 8.3 =
4
9
.8
Math
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Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
24.88896
2.
26.487
3.
15.8857
4.
21.774
5.
6.17
6.
48.5
7.
29.3229
8.
26.0
9.
3.025
10.
27.82175
11.
21.9032
12.
47.87212
13.
52.1565
14.
48.10230
15.
46.26
16.
13.9980
17.
13.04940
18.
19.0875
19.
69.150
20.
2.204
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 4.321 × 5.76 =
2
4
.8
8
8
2) 9 × 2.943 =
2
6
.4
8
7
3) 2.371 × 6.7 =
1
5
.8
8
5
4) 3 × 7.258 =
2
1
.7
7
4
5) 1 × 6.17 =
6
.1
7
6) 5 × 9.7 =
4
8
.5
7) 3.1 × 9.459 =
2
9
.3
8) 5 × 5.2 =
2
6
.0
9) 2.5 × 1.21 =
3
.0
2
5
10) 3.685 × 7.55 =
2
7
.8
2
1
7
11) 2.882 × 7.6 =
2
1
.9
0
3
2
2
2
9
7
9
12) 6.898 × 6.94 =
4
7
.8
7
2
1
13) 5.995 × 8.7 =
5
2
.1
5
6
5
14) 8.55 × 5.626 =
4
8
.1
0
2
3
15) 6 × 7.71 =
4
6
.2
6
16) 9.332 × 1.5 =
1
3
.9
9
8
5
2
0
0
17) 1.95 × 6.692 =
1
3
.0
4
9
4
18) 7.635 × 2.5 =
1
9
.0
8
7
5
19) 9.22 × 7.5 =
6
9
.1
5
0
20) 1.9 × 1.16 =
2
.2
0
4
Math
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3
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11-20 45 40 35 30 25 20 15 10 5 0
Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
24.88896
2.
26.487
3.
15.8857
4.
21.774
5.
6.17
6.
48.5
7.
29.3229
8.
26.0
9.
3.025
10.
27.82175
11.
21.9032
12.
47.87212
13.
52.1565
14.
48.10230
15.
46.26
16.
13.9980
17.
13.04940
18.
19.0875
19.
69.150
20.
2.204
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 4.321 × 5.76 =
2
4
.8
8
8
2) 9 × 2.943 =
2
6
.4
8
7
3) 2.371 × 6.7 =
1
5
.8
8
5
4) 3 × 7.258 =
2
1
.7
7
4
5) 1 × 6.17 =
6
.1
7
6) 5 × 9.7 =
4
8
.5
7) 3.1 × 9.459 =
2
9
.3
8) 5 × 5.2 =
2
6
.0
9) 2.5 × 1.21 =
3
.0
2
5
10) 3.685 × 7.55 =
2
7
.8
2
1
7
11) 2.882 × 7.6 =
2
1
.9
0
3
2
2
2
9
7
9
12) 6.898 × 6.94 =
4
7
.8
7
2
1
13) 5.995 × 8.7 =
5
2
.1
5
6
5
14) 8.55 × 5.626 =
4
8
.1
0
2
3
15) 6 × 7.71 =
4
6
.2
6
16) 9.332 × 1.5 =
1
3
.9
9
8
5
2
0
0
17) 1.95 × 6.692 =
1
3
.0
4
9
4
18) 7.635 × 2.5 =
1
9
.0
8
7
5
19) 9.22 × 7.5 =
6
9
.1
5
0
20) 1.9 × 1.16 =
2
.2
0
4
Math
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3
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11-20 45 40 35 30 25 20 15 10 5 0
Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
9.42
2.
29.01451
3.
43.837
4.
36.893
5.
3.4
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 3 × 3.14 =
9
.4
2
2) 8.819 × 3.29 =
2
9
.0
1
4
3) 5.9 × 7.43 =
4
3
.8
3
7
6.
16.562
4) 4.67 × 7.9 =
3
6
.8
9
3
7.
27.463
5) 2 × 1.7 =
3
.4
8.
10.1156
6) 9.8 × 1.69 =
1
6
.5
6
2
4.665
2
7
.4
9.
7) 9.47 × 2.9 =
6
3
8) 7.6 × 1.331 =
1
0
.1
1
5
10.
34.0
9) 3.11 × 1.5 =
4
.6
6
5
11.
46.89333
10) 4 × 8.5 =
3
4
.0
12.
10.23178
11) 8.31 × 5.643 =
4
6
.8
13.
30.345
9
3
5
1
6
3
3
12) 5.98 × 1.711 =
1
0
.2
3
1
13) 8.67 × 3.5 =
3
0
.3
4
5
14.
9.1615
14) 7.3 × 1.255 =
9
.1
6
1
5
15.
2.668
15) 1 × 2.668 =
2
.6
6
8
16.
27.0996
16) 4.4 × 6.159 =
2
7
.0
9
17.
47.538
18.
26.9075
19.
47.226
20.
21.046
9
17) 5.7 × 8.34 =
4
7
.5
3
8
18) 4.7 × 5.725 =
2
6
.9
0
7
19) 9.26 × 5.1 =
4
7
.2
2
6
20) 6.19 × 3.4 =
2
1
.0
4
6
Math
7
8
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Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
9.42
2.
29.01451
3.
43.837
4.
36.893
5.
3.4
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 3 × 3.14 =
9
.4
2
2) 8.819 × 3.29 =
2
9
.0
1
4
3) 5.9 × 7.43 =
4
3
.8
3
7
6.
16.562
4) 4.67 × 7.9 =
3
6
.8
9
3
7.
27.463
5) 2 × 1.7 =
3
.4
8.
10.1156
6) 9.8 × 1.69 =
1
6
.5
6
2
4.665
2
7
.4
9.
7) 9.47 × 2.9 =
6
3
8) 7.6 × 1.331 =
1
0
.1
1
5
10.
34.0
9) 3.11 × 1.5 =
4
.6
6
5
11.
46.89333
10) 4 × 8.5 =
3
4
.0
12.
10.23178
11) 8.31 × 5.643 =
4
6
.8
13.
30.345
9
3
5
1
6
3
3
12) 5.98 × 1.711 =
1
0
.2
3
1
13) 8.67 × 3.5 =
3
0
.3
4
5
14.
9.1615
14) 7.3 × 1.255 =
9
.1
6
1
5
15.
2.668
15) 1 × 2.668 =
2
.6
6
8
16.
27.0996
16) 4.4 × 6.159 =
2
7
.0
9
17.
47.538
18.
26.9075
19.
47.226
20.
21.046
9
17) 5.7 × 8.34 =
4
7
.5
3
8
18) 4.7 × 5.725 =
2
6
.9
0
7
19) 9.26 × 5.1 =
4
7
.2
2
6
20) 6.19 × 3.4 =
2
1
.0
4
6
Math
7
8
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1-10 95 90 85 80 75 70 65 60 55 50
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Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
60.695
2.
15.13274
3.
17.732
4.
26.29664
5.
6.40
6.
11.646
7.
11.661
8.
47.2578
9.
38.252
10.
13.30476
11.
28.259
12.
11.340
13.
23.7116
14.
5.548
15.
25.9714
16.
31.55286
17.
13.031
18.
88.55264
19.
26.386
20.
59.8587
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 9.95 × 6.1 =
6
0
.6
9
5
2) 5.689 × 2.66 =
1
5
.1
3
2
3) 3.1 × 5.72 =
1
7
.7
3
2
4) 5.92 × 4.442 =
2
6
.2
9
6
5) 5 × 1.28 =
6
.4
0
6) 1.8 × 6.47 =
1
1
.6
4
6
7) 6.9 × 1.69 =
1
1
.6
6
1
8) 5.982 × 7.9 =
4
7
.2
5
7
9) 5.24 × 7.3 =
3
8
.2
5
2
10) 2.359 × 5.64 =
1
3
.3
0
4
11) 7.7 × 3.67 =
2
8
.2
5
9
7
6
7
1
1
.3
4
0
13) 3.4 × 6.974 =
2
3
.7
1
1
14) 2.92 × 1.9 =
5
.5
4
8
15) 9.989 × 2.6 =
2
5
.9
7
1
4
16) 8.621 × 3.66 =
3
1
.5
5
2
8
1
3
.0
3
1
18) 9.68 × 9.148 =
8
8
.5
5
2
19) 3.34 × 7.9 =
2
6
.3
8
6
20) 6.171 × 9.7 =
5
9
.8
5
8
Math
4
8
12) 9.45 × 1.2 =
17) 8.3 × 1.57 =
4
6
6
6
6
4
7
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Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
60.695
2.
15.13274
3.
17.732
4.
26.29664
5.
6.40
6.
11.646
7.
11.661
8.
47.2578
9.
38.252
10.
13.30476
11.
28.259
12.
11.340
13.
23.7116
14.
5.548
15.
25.9714
16.
31.55286
17.
13.031
18.
88.55264
19.
26.386
20.
59.8587
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 9.95 × 6.1 =
6
0
.6
9
5
2) 5.689 × 2.66 =
1
5
.1
3
2
3) 3.1 × 5.72 =
1
7
.7
3
2
4) 5.92 × 4.442 =
2
6
.2
9
6
5) 5 × 1.28 =
6
.4
0
6) 1.8 × 6.47 =
1
1
.6
4
6
7) 6.9 × 1.69 =
1
1
.6
6
1
8) 5.982 × 7.9 =
4
7
.2
5
7
9) 5.24 × 7.3 =
3
8
.2
5
2
10) 2.359 × 5.64 =
1
3
.3
0
4
11) 7.7 × 3.67 =
2
8
.2
5
9
7
6
7
1
1
.3
4
0
13) 3.4 × 6.974 =
2
3
.7
1
1
14) 2.92 × 1.9 =
5
.5
4
8
15) 9.989 × 2.6 =
2
5
.9
7
1
4
16) 8.621 × 3.66 =
3
1
.5
5
2
8
1
3
.0
3
1
18) 9.68 × 9.148 =
8
8
.5
5
2
19) 3.34 × 7.9 =
2
6
.3
8
6
20) 6.171 × 9.7 =
5
9
.8
5
8
Math
4
8
12) 9.45 × 1.2 =
17) 8.3 × 1.57 =
4
6
6
6
6
4
7
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Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
19.194
2.
5.071
3.
18.84
4.
60.1470
5.
18.36868
6.
24.920
7.
13.2328
8.
28.260
9.
13.396
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 4.57 × 4.2 =
1
9
.1
9
2) 4.61 × 1.1 =
5
.0
7
1
3) 3 × 6.28 =
1
8
.8
4
4) 7.335 × 8.2 =
6
0
.1
4
7
0
5) 8.426 × 2.18 =
1
8
.3
6
8
6
6) 7.12 × 3.5 =
2
4
.9
2
0
7) 7.784 × 1.7 =
1
3
.2
3
2
8) 6.28 × 4.5 =
2
8
.2
6
0
10.
20.790
9) 1.7 × 7.88 =
1
3
.3
9
6
11.
41.7582
10) 4.95 × 4.2 =
2
0
.7
9
0
12.
23.62192
11) 5.7 × 7.326 =
4
1
.7
5
8
13.
15.521
4
8
8
2
12) 3.68 × 6.419 =
2
3
.6
2
1
13) 1.87 × 8.3 =
1
5
.5
2
1
14.
14.184
14) 3 × 4.728 =
1
4
.1
8
4
15.
7.2952
15) 4.4 × 1.658 =
7
.2
9
5
2
16.
20.1135
16) 2.3 × 8.745 =
2
0
.1
1
3
17.
13.2090
18.
12.530
19.
5.96
20.
7.776
17) 3.145 × 4.2 =
1
3
.2
0
9
18) 1.4 × 8.95 =
1
2
.5
3
0
19) 4 × 1.49 =
5
.9
6
20) 4 × 1.944 =
7
.7
7
Math
9
2
5
0
6
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Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
19.194
2.
5.071
3.
18.84
4.
60.1470
5.
18.36868
6.
24.920
7.
13.2328
8.
28.260
9.
13.396
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 4.57 × 4.2 =
1
9
.1
9
2) 4.61 × 1.1 =
5
.0
7
1
3) 3 × 6.28 =
1
8
.8
4
4) 7.335 × 8.2 =
6
0
.1
4
7
0
5) 8.426 × 2.18 =
1
8
.3
6
8
6
6) 7.12 × 3.5 =
2
4
.9
2
0
7) 7.784 × 1.7 =
1
3
.2
3
2
8) 6.28 × 4.5 =
2
8
.2
6
0
10.
20.790
9) 1.7 × 7.88 =
1
3
.3
9
6
11.
41.7582
10) 4.95 × 4.2 =
2
0
.7
9
0
12.
23.62192
11) 5.7 × 7.326 =
4
1
.7
5
8
13.
15.521
4
8
8
2
12) 3.68 × 6.419 =
2
3
.6
2
1
13) 1.87 × 8.3 =
1
5
.5
2
1
14.
14.184
14) 3 × 4.728 =
1
4
.1
8
4
15.
7.2952
15) 4.4 × 1.658 =
7
.2
9
5
2
16.
20.1135
16) 2.3 × 8.745 =
2
0
.1
1
3
17.
13.2090
18.
12.530
19.
5.96
20.
7.776
17) 3.145 × 4.2 =
1
3
.2
0
9
18) 1.4 × 8.95 =
1
2
.5
3
0
19) 4 × 1.49 =
5
.9
6
20) 4 × 1.944 =
7
.7
7
Math
9
2
5
0
6
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Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
26.4775
2.
30.432
3.
18.8
4.
6.4
5.
70.36896
6.
50.7564
7.
7.02832
8.
77.11533
9.
19.588
10.
61.5158
11.
55.713
12.
28.14
13.
43.0962
14.
4.984
15.
13.0575
16.
35.3496
17.
23.31036
18.
30.71875
19.
44.56174
20.
21.72456
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 3.115 × 8.5 =
2
6
.4
7
7
2) 3.2 × 9.51 =
3
0
.4
3
2
3) 4 × 4.7 =
1
8
.8
4) 2 × 3.2 =
6
.4
5) 7.36 × 9.561 =
7
0
6) 7.356 × 6.9 =
5
0
.7
5
6
4
7) 2.18 × 3.224 =
7
.0
2
8
3
2
8) 9.21 × 8.373 =
7
7
.1
1
5
3
9) 2.36 × 8.3 =
1
9
.5
8
8
10) 8.6 × 7.153 =
6
1
.5
1
5
11) 7 × 7.959 =
5
5
.7
1
3
.3
6
8
5
9
3
8
12) 3 × 9.38 =
2
8
.1
4
13) 6.951 × 6.2 =
4
3
.0
9
14) 2.8 × 1.78 =
4
.9
8
4
15) 1.741 × 7.5 =
1
3
.0
5
7
5
16) 4.532 × 7.8 =
3
5
.3
4
9
6
6
6
2
17) 8.76 × 2.661 =
2
3
.3
1
0
3
6
18) 6.25 × 4.915 =
3
0
.7
1
8
7
5
19) 6.421 × 6.94 =
4
4
.5
6
1
7
4
20) 8.44 × 2.574 =
2
1
.7
2
4
5
6
Math
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Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
26.4775
2.
30.432
3.
18.8
4.
6.4
5.
70.36896
6.
50.7564
7.
7.02832
8.
77.11533
9.
19.588
10.
61.5158
11.
55.713
12.
28.14
13.
43.0962
14.
4.984
15.
13.0575
16.
35.3496
17.
23.31036
18.
30.71875
19.
44.56174
20.
21.72456
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 3.115 × 8.5 =
2
6
.4
7
7
2) 3.2 × 9.51 =
3
0
.4
3
2
3) 4 × 4.7 =
1
8
.8
4) 2 × 3.2 =
6
.4
5) 7.36 × 9.561 =
7
0
6) 7.356 × 6.9 =
5
0
.7
5
6
4
7) 2.18 × 3.224 =
7
.0
2
8
3
2
8) 9.21 × 8.373 =
7
7
.1
1
5
3
9) 2.36 × 8.3 =
1
9
.5
8
8
10) 8.6 × 7.153 =
6
1
.5
1
5
11) 7 × 7.959 =
5
5
.7
1
3
.3
6
8
5
9
3
8
12) 3 × 9.38 =
2
8
.1
4
13) 6.951 × 6.2 =
4
3
.0
9
14) 2.8 × 1.78 =
4
.9
8
4
15) 1.741 × 7.5 =
1
3
.0
5
7
5
16) 4.532 × 7.8 =
3
5
.3
4
9
6
6
6
2
17) 8.76 × 2.661 =
2
3
.3
1
0
3
6
18) 6.25 × 4.915 =
3
0
.7
1
8
7
5
19) 6.421 × 6.94 =
4
4
.5
6
1
7
4
20) 8.44 × 2.574 =
2
1
.7
2
4
5
6
Math
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Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
76.80772
2.
10.57749
3.
25.24
4.
68.031
5.
16.066
6.
33.948
7.
13.77672
8.
54.575
9.
60.21424
10.
30.25328
11.
8.17048
12.
35.4426
13.
18.25
14.
11.7
15.
40.554
16.
82.062
17.
8.89
18.
35.6
19.
49.959
20.
24.976
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 7.69 × 9.988 =
7
6
.8
0
7
7
2
2) 1.33 × 7.953 =
1
0
.5
7
7
4
9
3) 4 × 6.31 =
2
5
.2
4
4) 9 × 7.559 =
6
8
.0
3
1
5) 2.77 × 5.8 =
1
6
.0
6
6
6) 4.14 × 8.2 =
3
3
.9
4
8
7) 8.38 × 1.644 =
1
3
.7
7
6
8) 9.25 × 5.9 =
5
4
.5
7
5
9) 9.179 × 6.56 =
6
0
.2
1
4
2
4
10) 8.221 × 3.68 =
3
0
.2
5
3
2
8
11) 4.346 × 1.88 =
8
.1
7
0
4
8
12) 9.327 × 3.8 =
3
5
.4
4
13) 5 × 3.65 =
1
8
.2
5
14) 9 × 1.3 =
1
1
.7
15) 7.51 × 5.4 =
4
0
.5
5
4
16) 9.4 × 8.73 =
8
2
.0
6
2
2
17) 1 × 8.89 =
8
.8
9
18) 4 × 8.9 =
3
5
.6
19) 6.1 × 8.19 =
4
9
.9
5
9
20) 8.92 × 2.8 =
2
4
.9
7
6
Math
7
2
6
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11-20 45 40 35 30 25 20 15 10 5 0
Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
76.80772
2.
10.57749
3.
25.24
4.
68.031
5.
16.066
6.
33.948
7.
13.77672
8.
54.575
9.
60.21424
10.
30.25328
11.
8.17048
12.
35.4426
13.
18.25
14.
11.7
15.
40.554
16.
82.062
17.
8.89
18.
35.6
19.
49.959
20.
24.976
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 7.69 × 9.988 =
7
6
.8
0
7
7
2
2) 1.33 × 7.953 =
1
0
.5
7
7
4
9
3) 4 × 6.31 =
2
5
.2
4
4) 9 × 7.559 =
6
8
.0
3
1
5) 2.77 × 5.8 =
1
6
.0
6
6
6) 4.14 × 8.2 =
3
3
.9
4
8
7) 8.38 × 1.644 =
1
3
.7
7
6
8) 9.25 × 5.9 =
5
4
.5
7
5
9) 9.179 × 6.56 =
6
0
.2
1
4
2
4
10) 8.221 × 3.68 =
3
0
.2
5
3
2
8
11) 4.346 × 1.88 =
8
.1
7
0
4
8
12) 9.327 × 3.8 =
3
5
.4
4
13) 5 × 3.65 =
1
8
.2
5
14) 9 × 1.3 =
1
1
.7
15) 7.51 × 5.4 =
4
0
.5
5
4
16) 9.4 × 8.73 =
8
2
.0
6
2
2
17) 1 × 8.89 =
8
.8
9
18) 4 × 8.9 =
3
5
.6
19) 6.1 × 8.19 =
4
9
.9
5
9
20) 8.92 × 2.8 =
2
4
.9
7
6
Math
7
2
6
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1-10 95 90 85 80 75 70 65 60 55 50
11-20 45 40 35 30 25 20 15 10 5 0
Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
19.8456
2.
5.42443
3.
33.397
4.
54.145
5.
9.561
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 8.269 × 2.4 =
1
9
.8
4
5
6
2) 1.21 × 4.483 =
5
.4
2
4
4
3
3) 3.67 × 9.1 =
3
3
.3
9
7
6.
20.020
4) 5.95 × 9.1 =
5
4
.1
4
5
7.
3.51
5) 1 × 9.561 =
9
.5
6
1
8.
39.30
6) 3.64 × 5.5 =
2
0
.0
16.86055
3
.5
9.
7) 3 × 1.17 =
1
8) 5 × 7.86 =
3
9
.3
0
10.
22.18892
9) 4.69 × 3.595 =
1
6
.8
6
0
5
5
11.
73.689
10) 2.84 × 7.813 =
2
2
.1
8
8
9
2
12.
7.114
11) 8.7 × 8.47 =
7
3
.6
8
9
13.
23.68142
14.
71.368
15.
21.4594
16.
25.3854
17.
67.13616
18.
81.969
19.
51.54
20.
27.81604
2
0
12) 2 × 3.557 =
7
.1
1
4
13) 8.54 × 2.773 =
2
3
.6
8
1
14) 8.8 × 8.11 =
7
1
.3
6
8
15) 8.2 × 2.617 =
2
1
.4
5
9
4
16) 3.134 × 8.1 =
2
5
.3
8
5
4
17) 8.268 × 8.12 =
6
7
.1
3
6
18) 9.21 × 8.9 =
8
1
.9
6
9
19) 6 × 8.59 =
5
1
.5
4
20) 4.846 × 5.74 =
2
7
.8
1
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Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
19.8456
2.
5.42443
3.
33.397
4.
54.145
5.
9.561
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 8.269 × 2.4 =
1
9
.8
4
5
6
2) 1.21 × 4.483 =
5
.4
2
4
4
3
3) 3.67 × 9.1 =
3
3
.3
9
7
6.
20.020
4) 5.95 × 9.1 =
5
4
.1
4
5
7.
3.51
5) 1 × 9.561 =
9
.5
6
1
8.
39.30
6) 3.64 × 5.5 =
2
0
.0
16.86055
3
.5
9.
7) 3 × 1.17 =
1
8) 5 × 7.86 =
3
9
.3
0
10.
22.18892
9) 4.69 × 3.595 =
1
6
.8
6
0
5
5
11.
73.689
10) 2.84 × 7.813 =
2
2
.1
8
8
9
2
12.
7.114
11) 8.7 × 8.47 =
7
3
.6
8
9
13.
23.68142
14.
71.368
15.
21.4594
16.
25.3854
17.
67.13616
18.
81.969
19.
51.54
20.
27.81604
2
0
12) 2 × 3.557 =
7
.1
1
4
13) 8.54 × 2.773 =
2
3
.6
8
1
14) 8.8 × 8.11 =
7
1
.3
6
8
15) 8.2 × 2.617 =
2
1
.4
5
9
4
16) 3.134 × 8.1 =
2
5
.3
8
5
4
17) 8.268 × 8.12 =
6
7
.1
3
6
18) 9.21 × 8.9 =
8
1
.9
6
9
19) 6 × 8.59 =
5
1
.5
4
20) 4.846 × 5.74 =
2
7
.8
1
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Placing Decimals with Multiplication
Name:
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
30.912
2.
47.930
3.
56.54642
4.
46.9861
5.
3.850
6.
10.0919
7.
17.83740
8.
57.67498
9.
53.3186
10.
43.7041
11.
35.21664
12.
9.86334
13.
11.2
14.
35.7952
15.
81.74984
16.
33.53
17.
40.66128
18.
33.945
19.
34.888
20.
59.540
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 6.9 × 4.48 =
3
0
.9
1
2
2) 5 × 9.586 =
4
7
.9
3
0
3) 7.231 × 7.82 =
5
6
.5
4
6
4
4) 4.9 × 9.589 =
4
6
.9
8
6
1
5) 2.2 × 1.75 =
3
.8
5
0
6) 7.763 × 1.3 =
1
0
.0
9
1
9
7) 5.48 × 3.255 =
1
7
.8
3
7
4
0
8) 8.27 × 6.974 =
5
7
.6
7
4
9
8
9) 7.958 × 6.7 =
5
3
.3
1
8
6
10) 6.7 × 6.523 =
4
3
.7
0
4
1
11) 8.152 × 4.32 =
3
5
.2
1
6
6
12) 7.646 × 1.29 =
9
.8
6
13) 8 × 1.4 =
1
1
.2
14) 7.616 × 4.7 =
3
5
.7
9
5
2
15) 9.686 × 8.44 =
8
1
.7
4
9
8
16) 7 × 4.79 =
3
3
.5
3
3
3
17) 5.436 × 7.48 =
4
0
.6
6
1
18) 9.3 × 3.65 =
3
3
.9
4
5
19) 3.56 × 9.8 =
3
4
.8
8
8
20) 9.16 × 6.5 =
5
9
.5
4
0
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1-10 95 90 85 80 75 70 65 60 55 50
11-20 45 40 35 30 25 20 15 10 5 0
Placing Decimals with Multiplication
Name:
Answer Key
Determine the placement of the decimal in each product.
4
5.809 × 7.8 =
5
3
1
1. Count the quantity of numbers to the right of the
decimal for each factor.
0
Answers
2
2. Add the amounts together. Your answer
should have the same quantity of numbers
to the right of the decimal.
5.809 has 3 numbers right of the decimal (5.809)
7.8 has 1 number right of the decimal (7.8)
3+1=4
5.089 (3) × 7.8 (1) = 45.3102 (4)
1.
30.912
2.
47.930
3.
56.54642
4.
46.9861
5.
3.850
6.
10.0919
7.
17.83740
8.
57.67498
9.
53.3186
10.
43.7041
11.
35.21664
12.
9.86334
13.
11.2
14.
35.7952
15.
81.74984
16.
33.53
17.
40.66128
18.
33.945
19.
34.888
20.
59.540
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
1) 6.9 × 4.48 =
3
0
.9
1
2
2) 5 × 9.586 =
4
7
.9
3
0
3) 7.231 × 7.82 =
5
6
.5
4
6
4
4) 4.9 × 9.589 =
4
6
.9
8
6
1
5) 2.2 × 1.75 =
3
.8
5
0
6) 7.763 × 1.3 =
1
0
.0
9
1
9
7) 5.48 × 3.255 =
1
7
.8
3
7
4
0
8) 8.27 × 6.974 =
5
7
.6
7
4
9
8
9) 7.958 × 6.7 =
5
3
.3
1
8
6
10) 6.7 × 6.523 =
4
3
.7
0
4
1
11) 8.152 × 4.32 =
3
5
.2
1
6
6
12) 7.646 × 1.29 =
9
.8
6
13) 8 × 1.4 =
1
1
.2
14) 7.616 × 4.7 =
3
5
.7
9
5
2
15) 9.686 × 8.44 =
8
1
.7
4
9
8
16) 7 × 4.79 =
3
3
.5
3
3
3
17) 5.436 × 7.48 =
4
0
.6
6
1
18) 9.3 × 3.65 =
3
3
.9
4
5
19) 3.56 × 9.8 =
3
4
.8
8
8
20) 9.16 × 6.5 =
5
9
.5
4
0
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2
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4
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