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Simple Multiplication

100

What is 2 x 15?

30

200

What is 4 x 9?

36

300

What is 12 x 7?

84

400

What is 10 x 11?

110

500

What is 12 x 12?

144

Estimating Multiplication

100

About how much is 3 x 42?

~120

200

About how much is 7 x 67?

~490

300

About how much is 5 x 92?

~450

400

About how much is 2 x 184?

~360

500

About how much is 9 x 361?

~3240

Exponent Equations

100

.009 x 10³

9

200

.062 x 10²

6.2

300

0.365 x 10⁴

3,650

400

3.1 x 10⁸

310,000,000

500

0.9463 x 10⁷

9,463,000

Decimals and Place Value

100

How do you say this place value: 0.01?

Hundredths

200

How do you say this place value: 0.001?

Thousandths

300

What is the place value of the 5 in this number: .05382

Hundredths

400

How do you say this decimal in word form: 12.235?

twelve point two hundred thirty-five thousandths

500

How do you say this decimal in word form: 6767.676

Six thousand seven hundred and sixty-seven point six hundred seventy-six thousandths

Estimating Multiplication of Decimals

100

0.87 x 112

~90

200

9.02 x 80

~720

300

0.54 x 24

~12

400

.79 x 51

~50

500

33.05 x 200

~6,000