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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 273 · 40 questions
TalentJR

How to solve it (Same number of places): Add zeros at the end so every decimal has the same number of places (0.5 = 0.500). Compare or add them like whole numbers, keeping the decimal points in a line. Place value after the point: tenths (0.1), hundredths (0.01), thousandths (0.001).

NameDateTime takenScore ___ / 40
  1. 1.Which is the smallest: 0.23, 0.061, 0.2, 0.171? (a) 0.23 (b) 0.061 (c) 0.2 (d) 0.171
  2. 2.6.16 + 7.5 = ? (a) 6.91 (b) 13.56 (c) 13.66 (d) 13.76
  3. 3.3.31 + 2.1 = ? (a) 5.51 (b) 5.41 (c) 5.31 (d) 3.52
  4. 4.3.32 + 3.7 = ? (a) 7.02 (b) 3.69 (c) 6.92 (d) 7.12
  5. 5.Which is the smallest: 0.594, 0.63, 0.034, 0.6? (a) 0.594 (b) 0.63 (c) 0.034 (d) 0.6
  6. 6.Which is the smallest: 0.3, 0.32, 0.025, 0.293? (a) 0.3 (b) 0.32 (c) 0.025 (d) 0.293
  7. 7.Which is the greatest: 0.21, 0.2, 0.127, 0.031? (a) 0.21 (b) 0.2 (c) 0.127 (d) 0.031
  8. 8.Which is the greatest: 0.152, 0.2, 0.24, 0.094? (a) 0.152 (b) 0.2 (c) 0.24 (d) 0.094
  9. 9.Which is the greatest: 0.29, 0.081, 0.189, 0.2? (a) 0.29 (b) 0.081 (c) 0.189 (d) 0.2
  10. 10.2.61 + 1.2 = ? (a) 3.81 (b) 3.71 (c) 3.91 (d) 2.73
  11. 11.Which is the greatest: 0.145, 0.25, 0.2, 0.061? (a) 0.145 (b) 0.25 (c) 0.2 (d) 0.061
  12. 12.8.55 + 6.2 = ? (a) 14.65 (b) 9.17 (c) 14.85 (d) 14.75
  13. 13.Which is the smallest: 0.415, 0.55, 0.5, 0.038? (a) 0.415 (b) 0.55 (c) 0.5 (d) 0.038
  14. 14.What is the value of the digit 9 in 48.379? (a) 0.9 (b) 0.09 (c) 9 (d) 0.009
  15. 15.What is the value of the digit 7 in 92.571? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  16. 16.4.65 + 2.1 = ? (a) 4.86 (b) 6.75 (c) 6.65 (d) 6.85
  17. 17.Which is the greatest: 0.84, 0.793, 0.087, 0.8? (a) 0.84 (b) 0.793 (c) 0.087 (d) 0.8
  18. 18.Which is the greatest: 0.79, 0.7, 0.089, 0.698? (a) 0.79 (b) 0.7 (c) 0.089 (d) 0.698
  19. 19.6.31 + 5.9 = ? (a) 6.9 (b) 12.31 (c) 12.11 (d) 12.21
  20. 20.What is the value of the digit 8 in 51.687? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  21. 21.Which is the smallest: 0.86, 0.8, 0.023, 0.716? (a) 0.86 (b) 0.8 (c) 0.023 (d) 0.716
  22. 22.3.05 + 6.2 = ? (a) 9.35 (b) 9.25 (c) 3.67 (d) 9.15
  23. 23.9.14 + 6.3 = ? (a) 15.44 (b) 15.34 (c) 15.54 (d) 9.77
  24. 24.8.69 + 3.4 = ? (a) 12.19 (b) 9.03 (c) 12.09 (d) 11.99
  25. 25.6.83 + 2.9 = ? (a) 9.83 (b) 9.63 (c) 7.12 (d) 9.73
  26. 26.3.14 + 7.9 = ? (a) 3.93 (b) 10.94 (c) 11.14 (d) 11.04
  27. 27.1.04 + 3.9 = ? (a) 4.94 (b) 4.84 (c) 1.43 (d) 5.04
  28. 28.What is the value of the digit 6 in 46.138? (a) 0.06 (b) 6 (c) 60 (d) 0.6
  29. 29.What is the value of the digit 1 in 45.612? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  30. 30.What is the value of the digit 2 in 38.921? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  31. 31.Which is the greatest: 0.5, 0.57, 0.045, 0.448? (a) 0.5 (b) 0.57 (c) 0.045 (d) 0.448
  32. 32.3.17 + 8.1 = ? (a) 11.37 (b) 11.17 (c) 3.98 (d) 11.27
  33. 33.6.31 + 5.6 = ? (a) 11.81 (b) 12.01 (c) 11.91 (d) 6.87
  34. 34.3.71 + 4.2 = ? (a) 7.81 (b) 4.13 (c) 8.01 (d) 7.91
  35. 35.Which is the smallest: 0.022, 0.2, 0.26, 0.124? (a) 0.022 (b) 0.2 (c) 0.26 (d) 0.124
  36. 36.2.28 + 8.5 = ? (a) 10.78 (b) 10.88 (c) 10.68 (d) 3.13
  37. 37.What is the value of the digit 2 in 24.135? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  38. 38.9.81 + 3.4 = ? (a) 13.31 (b) 10.15 (c) 13.11 (d) 13.21
  39. 39.What is the value of the digit 1 in 91.527? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  40. 40.Which is the greatest: 0.329, 0.44, 0.023, 0.4? (a) 0.329 (b) 0.44 (c) 0.023 (d) 0.4

Answer key

  1. 0.061
  2. 13.66
  3. 5.41
  4. 7.02
  5. 0.034
  6. 0.025
  7. 0.21
  8. 0.24
  9. 0.29
  10. 3.81
  11. 0.25
  12. 14.75
  13. 0.038
  14. 0.009
  15. 0.07
  16. 6.75
  17. 0.84
  18. 0.79
  19. 12.21
  20. 0.08
  21. 0.023
  22. 9.25
  23. 15.44
  24. 12.09
  25. 9.73
  26. 11.04
  27. 4.94
  28. 6
  29. 0.01
  30. 0.02
  31. 0.57
  32. 11.27
  33. 11.91
  34. 7.91
  35. 0.022
  36. 10.78
  37. 20
  38. 13.21
  39. 1
  40. 0.44

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