Students may use multiplication / division facts tables.
Answer Key (51 Points)
Grade 3 Unit 7 Checking Progress
Add parentheses to complete the number models.
1. 22 + (5 x 2) = 32
2. 56 = 8 x (5 + 2)
3. 17 – (4 x 3) = 5
4. 1 = 9 ÷ (3 + 6)
Complete the number models.
5. __11__ = (30 ÷ 5) + 5
7. 7 + (8 x 8) = __71__
6. 9 + (3 x 5) = __24_
8. __6__ = 12 – (12 ÷ 2)
7a. Understand function and placement of parentheses in number
sentences.
B D D+ S
Number Correct:
1-5 6
7
8
B
D D+ S
Estimate to solve the following problems. Estimate to the nearest ten or
hundred. Do not give the exact answer.
9. 388
+ 219
590, 600,
610, or 620
10. 104
+ 397
500
11. 465
+ 199
700 or 670
12. 250
+ 68
320, 350
370 or 400
Estimate to answer the questions below. There isn’t any tax on the items
below.
13. Allen wants to buy a notebook for $3.89 and a pen for $1.99. He has
$5.00. Does he have enough money? __No__
Explain your thinking: __________________________________________
________Answers Vary____________________________________________
________________________________________________________________
Number model you used: __$4.00 + $2.00 = $6.00______________
14. Josephine wants to buy 3 CDs. Each CD costs $8.99. About how much
money will she need? __$27.00___
Explain your thinking: _________________________________________
_______________Answers Vary____________________________________
_______________________________________________________________
Number model you used: ____3 x $9.00 = $27.00_____________
7b. Make ballpark estimates for sums and products.
Number Correct:
1-6
7
8
9-10
B
D
D+
S
B
D
D+
S
Circle the square facts.
15. 3 x 6 = 18
4 x 6 = 24
5 x 5 = 25
7c. Recognize and know square products.
Number Correct:
1-3
4
B
D
D+
6 x 6 = 36
5
S
B
D
D+
6 x 7 = 42
S
Fill in the missing factors and products.
16. 7 x __7__ = 49
17. 8 x 9 = _72__
18. 3 x _9___ = 27
19. __6__ x 8 = 48
20. __70_ = 10 x 7
21. _45__ = 5 x 9
22. 9
23. 7
x7
x6
63
42
24.
25. 6
5
6
x ___
36
x8
40
Find the rule and complete the “What’s My Rule?” table below.
26.
x9
in
8
out
72
4
36
2
18
6
54
9
81
Note: Give one point for the correct operation (x) and one point for the
correct number (9).
7d. Know multiplication facts from 7-9.
Number Correct:
1-10
11
12-13
B
D
D+
14-15
S
B
D
D+
S
Find the rule and complete the “What’s My Rule” table below.
27.
x20
in
4
out
80
7
140
3
60
6
120
5
100
Note: Give one point for the correct operation (x) and one point for the correct
number (20).
Solve the multiplication puzzles. Fill in the blanks.
28.
29.
x, ÷
40
600
x, ÷
4
70
8
320
4,800
30
120
2,100
7
280
4,200
50
200
3,500
7e. Solve extended multiplication facts to tens x tens.
Number Correct:
1-9
10
11
12-13
B
D
D+
S
B
D
D+
S
Challenge: (4 points)
Solve the multiplication/division puzzle. Fill in the blanks.
x, ÷
9
20
3
27
60
50
450
1,000