Question

Justin wants to buy 10 bottles of juice to share with his family. The juice costs $1.15 per bottle. Justin wants to multiply $1.15 by 10 to find the total cost of the bottles of juice. Which method can Justin use to find the product of $1.15 and 10?(1 point) Responses He knows that 10 is 10 to the power of 2, so he needs to move the decimal point in 1.15 two places to the left. He knows that 10 is 10 to the power of 2, so he needs to move the decimal point in 1.15 two places to the left. He knows that 10 is 10 to the power of 1, so he needs to move the decimal point in 1.15 one place to the left. He knows that 10 is 10 to the power of 1, so he needs to move the decimal point in 1.15 one place to the left. He knows that 10 is 10 to the power of 1, so he needs to move the decimal point in 1.15 one place to the right. He knows that 10 is 10 to the power of 1, so he needs to move the decimal point in 1.15 one place to the right. He knows that 10 is 10 to the power of 2, so he needs to move the decimal point in 1.15 two places to the right. He knows that 10 is 10 to the power of 2, so he needs to move the decimal point in 1.15 two places to the right. Skip to navigation

Answer 1

To find the product of $1.15 and 10, Justin can use the method of multiplication directly. However, if he were to think about moving the decimal point, it's important to note that multiplying by 10 means he will increase the value, and thus the decimal point should move to the right.

Since 10 is \(10^1\), he moves the decimal point in 1.15 one place to the right. Therefore, the correct method for Justin is:

He knows that 10 is \(10\) to the power of 1, so he needs to move the decimal point in 1.15 one place to the right.