28
Name
Date
Multiply Two- to Four-Digit
Numbers by Two Digits
Warm Up
One strategy you can use to multiply multidigit factors is an array area model of partial products.
1st
24 x 15
Draw a table and break down
each factor by its place value.
2nd Multiply to find the partial
products.
3rd Add all the partial products
to find the total.
10
5
20
200
100
4
40
20
200 + 40 + 100 + 20
= 360
316 x 42
40
2
300
12,000
600
10
400
20
6
240
12
12,000 + 400 + 240 + 600 + 20 + 12
= 13,272
Multiply. Use partial products to help you. Cross off the matching product.
63,423
A.
63
x
26
______
B.
58
x
34
______
C. 369
x 17
______
D. 2,187
x 29
_______
1,638
6,273
1,972
Warm Up, Practice, Test: Math • ©The Mailbox ® Books • TEC61401 • Key p. 92
Name
Date
Multiply Two- to Four-Digit
Numbers by Two Digits
Practice
Find each product. If you use the array area model strategy, show your work on
another sheet of paper.
Write the answer on the puzzle.
Across
2 7 1
31
x
58
______
4 9,584
x______
73
__
10 56
x
92
______
6 8,749
x______
39
__
11 1,829
x
43
________
2
3
4
5
6
7
10
538
x_____
91
__
9
11
Down
1 5 12
x____
34
__
3 8,741
x
42
________
8 937
x_____
83
__
4 379
x
67
_______
9 65
x____
81
__
Waiters are good at
multiplication because
we know our tables!
636
x
33
_______
Bonus: Use the array area model strategy to multiply the products of 2 across and 1 down by 12.
29
Warm Up, Practice, Test: Math • ©The Mailbox ® Books • TEC61401 • Key p. 92
8
Name
Test
Date
Multiply Two- to Four-Digit
Numbers by Two Digits
Fill in the bubble beside the correct answer.
1.
24
x 41
______
6.
A 840
409
x 31
_______
A 12,679
B 120
B 1,636
C 984
C 16,117
2.
85
x 33
______
7.
A 438
823
x 57
_______
A 9,776
B 2,805
B 96,234
C 510
C 46,911
3.
97
x
58
______
8.
A 1,261
1,348
x
27
________
A 36,396
B 1,198
B 99,081
C 5,626
C 12,132
4.
116
x 25
_______
9.
A 2,900
6,951
x 14
________
A 9,375
B 812
B 34,755
C 7,742
C 97,314
5.
343
x 72
_______
10.
A 3,087
5,304
x 63
________
A 334,152
B 24,696
B 47,736
C 9,090
C 432,360
30
Warm Up, Practice, Test: Math • ©The Mailbox ® Books • TEC61401 • Key p. 93