Question

Ashley multiplied 9 x 0.942 and got 84.78. How can you use estimation to show that Ashley's answer is wrong? Use whole numbers to estimate. The number 0.942 is about and 9x This estimated product is Ashley's answer. So, Ashley's answer is incorrect. (Type whole numbers or decimals)​

Answer 1

Answer:

Using Estimation = 9

Without Estimation = 8.478

Step-by-step explanation:

Using Estimation

We round up each number to the nearest whole number

9 ≈ 9

0.9472 ≈ 1

Hence:

9 × 1

= 9

Without estimation

9 x 0.942

= 8.478

From the above calculation, we can see where Ashley got it wrong.

Ashley multiplied 9 x 0.942 and got 84.78.

This is wrong because she put her decimal point in the wrong place, thereby making her calculation wrong.