The number system

Rounding decimals

Name: ______________________________Date: ______________Score: ______ / 20

1.
Round 3.9 to the nearest whole number.
2.
Round 65.8 to the nearest whole number.
3.
Round 8.5 cm to the nearest whole centimetre.
cm
4.
When rounding a number with 1 decimal place, when do you round UP?
1. AWhen the tenths digit is 5, 6, 7, 8 or 9
2. BWhen the tenths digit is 0, 1, 2, 3 or 4
3. CAlways
4. DNever
5.
Put these numbers in order, from smallest to largest.
Write the order (smallest to largest) in the boxes:
- ?7.3
- ?3.9
- ?0.4
- ?4.5
6.
Round 90.3 to the nearest whole number.
7.
Round 125.7 to the nearest whole number.
8.
Round 0.6 to the nearest whole number.
9.
Round 191.7 to the nearest whole number.
10.
Round 28.4 to the nearest whole number.
11.
Round 109 to the nearest whole number.
12.
Round 16.9 to the nearest whole number.
13.
Round 2973 to the nearest 100.
14.
Round 2638 to the nearest 100.
15.
705 rounds to 700 to the nearest 100.
True False
16.
2360 rounds to 2500 to the nearest 100.
True False
17.
Round 1885 to the nearest 100.
18.
2628 rounds to 2600 to the nearest 100.
True False
19.
Round 124 to the nearest 100.
20.
Estimate the answer to 8.9 + 6.2 by rounding each number to the nearest whole number.

Answer key

The number system — Rounding decimals