Question

what is the effect of dividing or multiplying powers of 10 on the decimal?

what is the effect of dividing or multiplying powers of 10 on the decimal?

Homework Answers

Answer #1

(1)

Effect of dividing powers of 10 on the decimal:

Move the decimal point to the left as many places as there are zeros in the factor

Example:

0.49 / 10 = 0.049

Move the decimal point one step to the left as 10 has one zero.

0.49 / 102 = 0.0049

Move the decimal point two steps to the left as 102  has two zeros.

(2)

Effect of multiplying powers of 10 on the decimal:

Move the decimal point to the right as many places as there are zeros in the factor

Example:

0.49 X 10 = 4.9

Move the decimal point one step to the right as 10 has one zero.

0.49 X 102 = 490

Move the decimal point two steps to the right as 102 has two zeros.

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