Box-Method
Estimate & Multiply
Missing Factor
Word Problems
100

10X21=

210

100

24X18=

400

100

10X____=100

10


100

Mr. Ortiz sells tortillas in bags of 25 and in bags of 50.  If he sells 4 bags of 50, how many tortillas did Mr. Ortiz sell?

200

200

20X41=

820

200

39X22=

800

200

20X____=1,000

50

200

Alberto rode the train 198 miles round trip 4 times last month.  Use multiplication to find the total distance Alberto traveled. 

792

300

50X12=

600

300

66X41=

2,800

300

____X20=1,600

80
300

The Alberto family spends $1,874 for rent each month.  How much does the family spend in 3 months?

5,622

400

80X43=

3,440

400

98X26=

3,000

400

____X40=

2,000

400

Rachel set up a display placing 126 painted rocks in each of 3 rows. How many rocks are in Rachel's display? Choose the numbers from below to complete 

18.        30

60         180

600       300

378       387

18

60

300

378

500

90X89=

8,010


500

94X88=

8,100

500

70X_____=4,900

70

500

Select all the partial products for 8X321

8

80

160

1,600

2,400

8, 160, 2,400

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