Question

Justin wants to buy 100 bottles of juice to sell at a school basketball game the juice costs 1.39 per bottle Justin wants to multiply 1.39 by 100 to find the total cost of the bottles of juice which method can Justin use to find the product of 1.30 and 100? A. 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 b. 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 c. He knows that 100 is 10 to the power of 3 so he needs to move the decimal point on 1.39’three places to the left d. 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

Answer 1

To find the total cost of 100 bottles of juice at $1.39 each, Justin can compute \(1.39 \times 100\).

Since multiplying by 100 is the same as moving the decimal point two places to the right, the correct method is:

D. 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.

Thus, when Justin moves the decimal point in 1.39 two places to the right, it becomes 139. Therefore, the total cost of the juice will be $139.