Unit 6 Review

Multiply 2.8 x 10²

• 0.28

• 280

• 0.028

• 2,800

Multiply 1.9 x 10³

• 1,900

• 190

• 19

• 0.0019

Multiply 14.3 x 10¹

• 1.43

• 0.143

• 143

• 1,430

Multiply 16.5 x 10²

• 1,650

• 165

• 0.165

• 1.65

The rule for multiplying a decimal by a power of 10 is to move the decimal point to the ______ the same number of times as the exponent.

• left

• right

Divide 2.8 ÷ 10²

• 28

• 280

• 0.28

• 0.028

Divide 1.9 ÷ 10¹

• 19

• 0.19

• 190

• 0.019

Divide 14.3 ÷ 10⁴

• 0.00143

• 0.0143

• 143,000

• 14,300

Divide 16.5 ÷ 10³

• 16,500

• 0.165

• 0.0165

• 1,650

The rule for dividing a decimal by a power of 10 is to move the decimal point to the ______ the same number of times as the exponent.

• left

• right