NOTE: There is a check answer button in the bottom right corner. Click this to check your answer before moving on to the next question. It will not tell you the correct answer, but it will tell you if the answer you selected is correct. You can use this feature once per question.
(1 point)
Responses
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 3, so he needs to move the decimal point in 1.39 three 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.
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 right.
1 answer
To find the product of $1.39 and 100, Justin can use the knowledge that 100 is \(10^2\). When multiplying by 100, he needs to move the decimal point in the number 1.39 two places to the right (since multiplying by 100 is the same as multiplying by \(10^2\)).
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.
