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

Here are the solutions to the rounding problems, broken down by section.

Part 1: Round each number to the nearest tenth

*Rule: Look at the hundredths place (the second digit after the decimal). If it is 5 or more, round up. If it is less than 5, keep the tenths digit the same.*

1) 8.326 → The hundredths digit is 2 (less than 5), so we keep the 3.
Answer: 8.3

2) 6.998 → The hundredths digit is 9 (5 or more), so we round the 9 up. This makes it 10, which carries over to the ones place (6 becomes 7).
Answer: 7.0

3) 9.83 → The hundredths digit is 3 (less than 5), so we keep the 8.
Answer: 9.8

4) 51.711 → The hundredths digit is 1 (less than 5), so we keep the 7.
Answer: 51.7

5) 687.817 → The hundredths digit is 1 (less than 5), so we keep the 8.
Answer: 687.8

6) 19.07 → The hundredths digit is 7 (5 or more), so we round the 0 up to 1.
Answer: 19.1

7) 432.080 → The hundredths digit is 8 (5 or more), so we round the 0 up to 1.
Answer: 432.1

8) 483.37 → The hundredths digit is 7 (5 or more), so we round the 3 up to 4.
Answer: 483.4

9) 59.42 → The hundredths digit is 2 (less than 5), so we keep the 4.
Answer: 59.4

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Part 2: Round each number to the nearest hundredth

*Rule: Look at the thousandths place (the third digit after the decimal). If it is 5 or more, round up. If it is less than 5, keep the hundredths digit the same.*

1) 84.744 → The thousandths digit is 4 (less than 5), so we keep the 4.
Answer: 84.74

2) 6.883 → The thousandths digit is 3 (less than 5), so we keep the 8.
Answer: 6.88

3) 308.817 → The thousandths digit is 7 (5 or more), so we round the 1 up to 2.
Answer: 308.82

4) 66.663 → The thousandths digit is 3 (less than 5), so we keep the 6.
Answer: 66.66

5) 399.839 → The thousandths digit is 9 (5 or more), so we round the 3 up to 4.
Answer: 399.84

6) 409.723 → The thousandths digit is 3 (less than 5), so we keep the 2.
Answer: 409.72

7) 7.450 → The thousandths digit is 0 (less than 5), so we keep the 5.
Answer: 7.45

8) 117.855 → The thousandths digit is 5 (5 or more), so we round the 5 up to 6.
Answer: 117.86

9) 66.935 → The thousandths digit is 5 (5 or more), so we round the 3 up to 4.
Answer: 66.94

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Part 3: Round each number to the nearest thousandth

*Rule: Look at the ten-thousandths place (the fourth digit after the decimal). If it is 5 or more, round up. If it is less than 5, keep the thousandths digit the same.*

1) 5.0016 → The ten-thousandths digit is 6 (5 or more), so we round the 1 up to 2.
Answer: 5.002

2) 6.1087 → The ten-thousandths digit is 7 (5 or more), so we round the 8 up to 9.
Answer: 6.109

3) 56.3008 → The ten-thousandths digit is 8 (5 or more), so we round the 0 up to 1.
Answer: 56.301

4) 106.7128 → The ten-thousandths digit is 8 (5 or more), so we round the 2 up to 3.
Answer: 106.713

5) 4.6687 → The ten-thousandths digit is 7 (5 or more), so we round the 8 up to 9.
Answer: 4.669

6) 49.9376 → The ten-thousandths digit is 6 (5 or more), so we round the 7 up to 8.
Answer: 49.938

7) 856.3981 → The ten-thousandths digit is 1 (less than 5), so we keep the 8.
Answer: 856.398

8) 69.6009 → The ten-thousandths digit is 9 (5 or more), so we round the 0 up to 1.
Answer: 69.601

9) 73.7896 → The ten-thousandths digit is 6 (5 or more), so we round the 9 up. This makes it 10, carrying over to the hundredths place (8 becomes 9).
Answer: 73.790

Final Answer:
Round to the 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

Round to the 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

Round to the 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