Question

Estimate the sum by rounding each number to the nearest whole number and then adding.

6.58 + 4.3
A. 12
B. 11
C. 10
D. 9

Answer 1

To estimate the sum, round 6.58 to 7 and 4.3 to 4 before adding. The estimated sum after rounding is 7 + 4 = 11, so the answer is B. 11.

Step-by-step explanation:

The question asks us to estimate the sum by rounding each number to the nearest whole number before adding them together. We will round 6.58 to 7 and 4.3 to 4, since these are their nearest whole numbers. Then we add these rounded numbers together:

• 6.58 → Rounded to 7
• 4.3 → Rounded to 4

Adding 7 + 4 gives us 11 as the estimated sum. Therefore, the answer to the question is B. 11.