Rounding Decimals Worksheets - Math Monks - Free Printable

Let’s go through each section step by step.

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Section 1: Round to the nearest whole number.

We look at the digit in the tenths place (first after decimal). If it’s 5 or more, we round up. If less than 5, we keep the whole number as is.

1) 1.44 → tenths digit is 4 → round down → 1
2) 6.234 → tenths digit is 2 → round down → 6
3) 36.87 → tenths digit is 8 → round up → 37
4) 19.67 → tenths digit is 6 → round up → 20
5) 91.921 → tenths digit is 9 → round up → 92
6) 15.014 → tenths digit is 0 → round down → 15

✔ Checked: All correct.

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Section 2: Round to the nearest tenth.

Look at the hundredths place (second after decimal). If 5 or more, round up the tenths digit. Else, leave it.

1) 45.637 → hundredths = 3 → round down → 45.6
2) 9.012 → hundredths = 1 → round down → 9.0
3) 15.623 → hundredths = 2 → round down → 15.6
4) 9.66 → hundredths = 6 → round up → 9.7
5) 91.921 → hundredths = 2 → round down → 91.9
6) 593.30 → hundredths = 0 → round down → 593.3

✔ Checked: All correct.

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Section 3: Round to the nearest hundredth.

Look at the thousandths place (third after decimal). If 5 or more, round up the hundredths digit. Else, leave it.

1) 3.215 → thousandths = 5 → round up → 3.22
2) 44.444 → thousandths = 4 → round down → 44.44
3) 0.009 → thousandths = 9 → round up → but wait — 0.00 + 0.01? Let’s see:
- The hundredths digit is 0, thousandths is 9 → so 0.00 becomes 0.01 → 0.01
4) 2.3838 → thousandths = 3 → round down → 2.38
5) 8.005 → thousandths = 5 → round up → 8.01
6) 16.336 → thousandths = 6 → round up → 16.34

✔ Checked: All correct.

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Section 4: Round to the nearest thousandth.

Look at the ten-thousandths place (fourth after decimal). If 5 or more, round up the thousandths digit. Else, leave it.

1) 0.0091 → fourth digit = 1 → round down → 0.009
2) 2.9999 → fourth digit = 9 → round up → 2.999 + 0.001 = 3.000
3) 0.1335 → fourth digit = 5 → round up → 0.134
4) 60.618 → no fourth digit → already at thousandths → 60.618
5) 8.1234 → fourth digit = 4 → round down → 8.123
6) 0.196 → no fourth digit → already at thousandths → 0.196

✔ Checked: All correct.

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Final Answer:

Round to the nearest whole number:
1) 1
2) 6
3) 37
4) 20
5) 92
6) 15

Round to the nearest tenth:
1) 45.6
2) 9.0
3) 15.6
4) 9.7
5) 91.9
6) 593.3

Round to the nearest hundredth:
1) 3.22
2) 44.44
3) 0.01
4) 2.38
5) 8.01
6) 16.34

Round to the nearest thousandth:
1) 0.009
2) 3.000
3) 0.134
4) 60.618
5) 8.123
6) 0.196