Question

round to the nearest tenth, the find the estimated sum of 8.72 and 12.293. 21.013 21 20.9 20 question 2 (multiple choice worth 5 points) (02.02r mc)

Explanation:

Step1: Round each number to the nearest tenth

To round 8.72 to the nearest tenth, look at the hundredth place (2). Since 2 < 5, we keep the tenth place as is. So, 8.72 rounded to the nearest tenth is 8.7.

To round 12.293 to the nearest tenth, look at the hundredth place (9). Since 9 ≥ 5, we round up the tenth place. So, 12.293 rounded to the nearest tenth is 12.3.

Step2: Find the sum of the rounded numbers

Now, add the rounded numbers: \( 8.7 + 12.3 = 21.0 \), which is approximately 21 when considering the context of estimation (or if we round 21.0 to the nearest whole number, it's 21).

Answer:

21 (corresponding to the option "21")