Estimating
Standard Algorithm
Partial Product
Find the missing number
Word Problems
100

3 x 11

30

100

2 x 14

28

100

3 x 13

39

100

50 x _ = 350

7

100

A school club wants to buy shirts for each of its 38 members. Each shirt costs $23. About how much money will all the shirts cost. Estimate your answer.

800

200

52 x 4

200

200

7 x 24

168

200

8 x 23

184

200

_ x 32 = 224

7
200

Mr. Morris brought sketchpads for 24 of his students. Each pad contained 50 sheets. How many sheets of paper were in all the pads together?

1,200 sheets

300

37 x 12

400 or 480

300

25 x 37

925

300

75 x 40

3,000

300

_ x 3 = 72

24

300

A local charity collected 163 cans of food each day for 14 days. How many cans did they collect in all?

2,282 cans

400
127 x 3

390

400

28 x 62

1,763

400

65 x 38

2,470

400

30_ x 2 = 600

0

400

10 years ago, Melissa planted a tree in her backyard. She has taken a photo of the tree every week so she can see how much it has grown as time passed. How many photos of the tree does Melissa now have? (Hint: there are 52 weeks in one year)

520

500

250 x 400

200,000

500

368 x 46

16,928

500

841 x 36

30,276

500

3_7 x 8 = 2,776

4

500

An elevator can carry 15 adults or 20 children at one time. During the course of a day, the elevator carries a full passenger load 52 times. If all the passengers were children, how many more people would the elevator carry than if all the passengers were adults?

20 x 52 = 1,040

15 x 52 = 780

1,040 - 780 = 260 more people

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