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Estimate
Exponents
Decimals
Word Problems
100
300 X 20
6000
100

Estimate 42 X 21

40 X 20 = 800

100

103

1,000

100

3 X 0.1

0.3

100

Brooke bought 10 chairs for $32 each, how much did she spend?

10 X 32 = $320

200
125 X 10
1250
200
Estimate 56 x 10
60 x 10 = 600
200

105

100,000

200

5 x 0.01

0.05

200

Brody feeds each goat 4 pounds of hay each day. In a month with 28 days, how many pounds of hay does each goat receive?

4 X 28 = 112

300
425 X 12
5100
300
Estimate 38 X 72
40 X 70 = 2800
300

2x103

2,000

300

50 x 0.1

5.0

300
Ava and Evelin made stickers that are each 11 inches long. How long is all of the material if they made 25 stickers?
11 X 25 = 275 inches
400
128 X 24
3072
400
Estimate 35 X 35
40 X 40 = 1600
400

40 x 105

4,000,000

400

4.3 x 0.3

1.29

400

Daniel modeled an object which uses 2.9 grams of plastic to 3D print. If he prints 13 copies, how much plastic will he need?

13 X 29 = 37.7 grams

500
567 X 89
50,463
500
Estimate 63 X 32
60 X 30 = 1800
500

5 X 101

50

500

1.23 x 5.6

6.888

500

Brayan created a math practice sheet with 17 questions. If 481 people complete the sheet, how many questions were answered in total?

481 X 17 = 8,177questions