Question

22 Four different students rounded the numbers37.510, 81.021, and 69.412 and then addedthe numbers.Part A: Fill in the chart with the roundednumber and sum for each student.Sum of RoundedNumbersStudentRounded37.510 81.021 69.412to Nearest:1One2.Ten3Tenth4HundredthPart B Order the sums for the students fromleast to greatest.

Answer 1

Hello there. To solve this question, we'll have to remember some properties about rounding numbers.

Given the numbers 37.510, 81.021 and 69.412, we want to fill the gaps in the following table:

First, remember: Rounding to the nearest one is the same as not having the decimal places. For example, rounding 2.10 to the nearest one results in 2.

Rounding to the nearest ten is rounding to the nearest multiple of ten. For example, rounding 46.31 to the nearest ten results in 50 because it is closer to 50 than 40.

Rounding to the nearest tenth and hundreth is well known, just round the number to its first and second decimal places.

Filling the table, we have.

Ordering the sums from least to greatest, we have

187, 187.4, 187.94, 190.