Mental Math
Estimate
Multiply
Prime Factorization and Exponents
Decimals/Fractions
100

8,000 x 7

56,000

100

Estimate: 89 x 56

90 x 60 = 5,400

100

84 x 47

3,948

100

Prime Factorization of 25

52

100

What is the fraction for 0.031

31/1000

200

500 x 800

400,000

200

Estimate: 9 x 31

9 x 30 = 270 or 10 x 30 = 300

200

6 x 789

4,734

200

Write 4x4x4x4x4 using exponents

45

200

What is the fraction for 0.26

26/100

300

8 x 12,000

96,000

300

Estimate: 29 x 63

30 x 60 = 1,800

300

830 x 13

10,790

300

Prime Factorization of 60

22x3x5

300

What is the decimal for 25/1000

.025

400

4 x 104

40,000

400

Estimate: 94 x 17

90 x 20 = 1,800
400

96 x 120

11,520

400

V = length x width x height

Each side of a cube is 6 feet. Write as a power and fins the amount

63= 216

400

What is the decimal for 5/1000

0.005

500

70 x 103

70,000

500

Estimate: 6 x 45

6 x 50 = 300

500

43 x 182

7,826

500

Find the product of 53

5x5x5=125

500

What is the decimal for 6/100

0.06

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