Printable math worksheet for rounding decimals to the nearest tenth, hundredth, and thousandth.

Let’s go through each section step by step.

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Section 1: Round to the nearest tenth

To round to the nearest tenth, look at the hundredths digit (the second digit after the decimal).
- If it’s 5 or more, round up the tenths digit.
- If it’s less than 5, keep the tenths digit as is.

1) 8.326 → hundredths = 2 → less than 5 → 8.3
2) 6.998 → hundredths = 9 → ≥5 → round up 9 → becomes 7.0 → 7.0
3) 9.83 → hundredths = 3 → <5 → 9.8
4) 51.711 → hundredths = 1 → <5 → 51.7
5) 687.817 → hundredths = 1 → <5 → 687.8
6) 19.07 → hundredths = 7 → ≥5 → round up 0 → 19.1 → 19.1
7) 432.080 → hundredths = 8 → ≥5 → round up 0 → 432.1 → 432.1
8) 483.37 → hundredths = 7 → ≥5 → round up 3 → 483.4 → 483.4
9) 59.42 → hundredths = 2 → <5 → 59.4

✔ All checked.

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Section 2: Round to the nearest hundredth

Look at the thousandths digit (third after decimal).
- ≥5 → round up hundredths
- <5 → leave hundredths

1) 84.744 → thousandths = 4 → <5 → 84.74
2) 6.883 → thousandths = 3 → <5 → 6.88
3) 308.817 → thousandths = 7 → ≥5 → round up 1 → 308.82 → 308.82
4) 66.663 → thousandths = 3 → <5 → 66.66
5) 399.839 → thousandths = 9 → ≥5 → round up 3 → 399.84 → 399.84
6) 409.723 → thousandths = 3 → <5 → 409.72
7) 7.450 → thousandths = 0 → <5 → 7.45
8) 117.855 → thousandths = 5 → ≥5 → round up 5 → 117.86 → 117.86
9) 66.935 → thousandths = 5 → ≥5 → round up 3 → 66.94 → 66.94

✔ All checked.

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Section 3: Round to the nearest thousandth

Look at the ten-thousandths digit (fourth after decimal).
- ≥5 → round up thousandths
- <5 → leave thousandths

1) 5.0016 → fourth digit = 6 → ≥5 → round up 1 → 5.002 → 5.002
2) 6.1087 → fourth digit = 7 → ≥5 → round up 8 → 6.109 → 6.109
3) 56.3008 → fourth digit = 8 → ≥5 → round up 0 → 56.301 → 56.301
4) 106.7128 → fourth digit = 8 → ≥5 → round up 2 → 106.713 → 106.713
5) 4.6687 → fourth digit = 7 → ≥5 → round up 8 → 4.669 → 4.669
6) 49.9376 → fourth digit = 6 → ≥5 → round up 7 → 49.938 → 49.938
7) 856.3981 → fourth digit = 1 → <5 → 856.398
8) 69.6009 → fourth digit = 9 → ≥5 → round up 0 → 69.601 → 69.601
9) 73.7896 → fourth digit = 6 → ≥5 → round up 9 → 73.790 → 73.790

✔ All checked.

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Final Answer:

Rounding Decimals Worksheet Answers:

Nearest Tenth:
1) 8.3
2) 7.0
3) 9.8
4) 51.7
5) 687.8
6) 19.1
7) 432.1
8) 483.4
9) 59.4

Nearest Hundredth:
1) 84.74
2) 6.88
3) 308.82
4) 66.66
5) 399.84
6) 409.72
7) 7.45
8) 117.86
9) 66.94

Nearest Thousandth:
1) 5.002
2) 6.109
3) 56.301
4) 106.713
5) 4.669
6) 49.938
7) 856.398
8) 69.601
9) 73.790