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(1 point)
Responses
He knows that 100 is 10 to the power of 3, so he needs to move the decimal point in 1.39 three places to the right.
He knows that 100 is 10 to the power of 3, so he needs to move the decimal point in 1.39 three places to the right.
He knows that 100 is 10 to the power of 2, so he needs to move the decimal point in 1.39 two places to the right.
He knows that 100 is 10 to the power of 2, so he needs to move the decimal point in 1.39 two places to the right.
He knows that 100 is 10 to the power of 2, so he needs to move the decimal point in 1.39 two places to the left.
He knows that 100 is 10 to the power of 2, so he needs to move the decimal point in 1.39 two places to the left.
He knows that 100 is 10 to the power of 3, so he needs to move the decimal point in 1.39 three places to the left.
1 answer
To find the product of $1.39 and 100, Justin can use the method of multiplying by powers of ten. Since 100 is equal to \(10^2\), he needs to move the decimal point in 1.39 two places to the right (multiplying the number by 100 will effectively increase its value).
Therefore, the correct response is:
He knows that 100 is 10 to the power of 2, so he needs to move the decimal point in 1.39 two places to the right.
