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# Introduction to Decimals Practice Questions

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Updated on Oct 4, 2011

To review these concepts, go to Introduction to Decimals Study Guide.

## Introduction to Decimals Practice Questions

### Practice

Write out the following decimals in words.

1. 0.1 __________________________________
2. 0.01 _________________________________
3. 0.001 ________________________________
4. 0.0001 _______________________________
5. 0.00001 _______________________________
6. 5.19 _________________________________
7. 1.0521 _______________________________

Write the following as decimals or mixed decimals.

1. Six tenths
2. Six hundredths
3. Twenty-five thousandths
4. Three hundred twenty-one thousandths
5. Nine and six thousandths
6. Three and one ten-thousandth
7. Fifteen and two hundred sixteen thousandths

Change these decimals or mixed decimals to fractions in lowest terms.

1. 0.1
2. 0.03
3. 0.75
4. 0.6
5. 0.005
6. 0.125
7. 0.046
8. 5.04
9. 4.15
10. 123.45

Change these fractions to decimals.

Order each group from lowest to highest.

1. 0.2, 0.05, 0.009
2. 0.417, 0.422, 0.396
3. 0.019, 2.009, 0.01
4. 0.82, 0.28, 0.8, 0.2
5. 0.3, 0.30, 0.300
6. 0.5, 0.05, 0.005, 0.505

Round each decimal to the nearest whole number.

1. 0.03
2. 0.796
3. 9.49
4. 3.33
5. 8.5
6. 7.8298

Round each decimal to the nearest tenth.

1. 4.76
2. 19.85
3. 0.818
4. 9.49
5. 2.97
6. 12.09
7. 7.8298

#### Solutions

1. One tenth
2. One hundredth
3. One thousandth
4. One ten-thousandth
5. One hundred-thousandth
6. Five and nineteen hundredths
7. One and five hundred twenty-one ten-thousandths
8. 0.6 (or .6)
9. 0.06
10. 0.025
11. 0.321
12. 9.006
13. 3.0001
14. 15.216
15. 0.4
16. 0.25
17. 0.7
18. 0.875
19. 4.75
20. 2.2
21. 0.009, 0.05, 0.2
22. 0.396, 0.417, 0.422
23. 0.01, 0.019, 2.009
24. 0.2, 0.28, 0.8, 0.82
25. All have the same value
26. 0.005, 0.05, 0.5, 0.505
27. 0
28. 1
29. 9
30. 3
31. 9
32. 8
33. 4.8
34. 19.9
35. 0.8
36. 9.5
37. 3.0
38. 12.1
39. 7.8

150 Characters allowed

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