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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 694 · 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.What is the value of the digit 3 in 43.651? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  2. 2.4.77 + 5.3 = ? (a) 10.17 (b) 9.97 (c) 5.3 (d) 10.07
  3. 3.Which is the smallest: 0.4, 0.017, 0.376, 0.49? (a) 0.4 (b) 0.017 (c) 0.376 (d) 0.49
  4. 4.Which is the smallest: 0.316, 0.099, 0.41, 0.4? (a) 0.316 (b) 0.099 (c) 0.41 (d) 0.4
  5. 5.Which is the greatest: 0.061, 0.8, 0.737, 0.83? (a) 0.061 (b) 0.8 (c) 0.737 (d) 0.83
  6. 6.Which is the smallest: 0.341, 0.053, 0.43, 0.4? (a) 0.341 (b) 0.053 (c) 0.43 (d) 0.4
  7. 7.Which is the greatest: 0.022, 0.654, 0.76, 0.7? (a) 0.022 (b) 0.654 (c) 0.76 (d) 0.7
  8. 8.3.58 + 5.2 = ? (a) 8.68 (b) 8.88 (c) 8.78 (d) 4.1
  9. 9.5.34 + 1.4 = ? (a) 6.64 (b) 6.74 (c) 5.48 (d) 6.84
  10. 10.6.74 + 5.2 = ? (a) 11.94 (b) 11.84 (c) 7.26 (d) 12.04
  11. 11.Which is the greatest: 0.21, 0.035, 0.184, 0.2? (a) 0.21 (b) 0.035 (c) 0.184 (d) 0.2
  12. 12.3.39 + 2.2 = ? (a) 5.49 (b) 5.59 (c) 5.69 (d) 3.61
  13. 13.1.86 + 5.6 = ? (a) 7.46 (b) 2.42 (c) 7.56 (d) 7.36
  14. 14.What is the value of the digit 1 in 59.164? (a) 0.001 (b) 1 (c) 0.01 (d) 0.1
  15. 15.What is the value of the digit 2 in 32.896? (a) 2 (b) 20 (c) 0.02 (d) 0.2
  16. 16.Which is the smallest: 0.037, 0.3, 0.33, 0.253? (a) 0.037 (b) 0.3 (c) 0.33 (d) 0.253
  17. 17.6.28 + 7.5 = ? (a) 13.68 (b) 13.88 (c) 13.78 (d) 7.03
  18. 18.5.27 + 6.3 = ? (a) 5.9 (b) 11.67 (c) 11.47 (d) 11.57
  19. 19.What is the value of the digit 7 in 71.438? (a) 0.7 (b) 0.07 (c) 70 (d) 7
  20. 20.4.03 + 4.7 = ? (a) 8.63 (b) 8.83 (c) 4.5 (d) 8.73
  21. 21.4.68 + 8.2 = ? (a) 12.78 (b) 12.98 (c) 12.88 (d) 5.5
  22. 22.What is the value of the digit 8 in 12.387? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  23. 23.6.71 + 6.2 = ? (a) 12.81 (b) 12.91 (c) 7.33 (d) 13.01
  24. 24.What is the value of the digit 5 in 85.932? (a) 0.5 (b) 0.05 (c) 5 (d) 50
  25. 25.1.51 + 3.5 = ? (a) 4.91 (b) 5.11 (c) 1.86 (d) 5.01
  26. 26.9.87 + 4.8 = ? (a) 14.77 (b) 14.67 (c) 10.35 (d) 14.57
  27. 27.Which is the greatest: 0.8, 0.043, 0.728, 0.82? (a) 0.8 (b) 0.043 (c) 0.728 (d) 0.82
  28. 28.What is the value of the digit 5 in 76.853? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  29. 29.What is the value of the digit 5 in 32.645? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  30. 30.1.45 + 8.7 = ? (a) 10.25 (b) 10.15 (c) 2.32 (d) 10.05
  31. 31.5.96 + 5.4 = ? (a) 11.36 (b) 6.5 (c) 11.46 (d) 11.26
  32. 32.Which is the greatest: 0.072, 0.7, 0.625, 0.71? (a) 0.072 (b) 0.7 (c) 0.625 (d) 0.71
  33. 33.7.91 + 4.6 = ? (a) 12.61 (b) 8.37 (c) 12.51 (d) 12.41
  34. 34.What is the value of the digit 2 in 27.438? (a) 0.02 (b) 0.2 (c) 2 (d) 20
  35. 35.What is the value of the digit 6 in 57.649? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  36. 36.4.62 + 5.4 = ? (a) 10.12 (b) 9.92 (c) 5.16 (d) 10.02
  37. 37.4.51 + 7.5 = ? (a) 5.26 (b) 12.01 (c) 12.11 (d) 11.91
  38. 38.6.68 + 2.6 = ? (a) 9.38 (b) 9.28 (c) 9.18 (d) 6.94
  39. 39.Which is the greatest: 0.051, 0.61, 0.525, 0.6? (a) 0.051 (b) 0.61 (c) 0.525 (d) 0.6
  40. 40.Which is the smallest: 0.41, 0.4, 0.331, 0.061? (a) 0.41 (b) 0.4 (c) 0.331 (d) 0.061

Answer key

  1. 3
  2. 10.07
  3. 0.017
  4. 0.099
  5. 0.83
  6. 0.053
  7. 0.76
  8. 8.78
  9. 6.74
  10. 11.94
  11. 0.21
  12. 5.59
  13. 7.46
  14. 0.1
  15. 2
  16. 0.037
  17. 13.78
  18. 11.57
  19. 70
  20. 8.73
  21. 12.88
  22. 0.08
  23. 12.91
  24. 5
  25. 5.01
  26. 14.67
  27. 0.82
  28. 0.05
  29. 0.005
  30. 10.15
  31. 11.36
  32. 0.71
  33. 12.51
  34. 20
  35. 0.6
  36. 10.02
  37. 12.01
  38. 9.28
  39. 0.61
  40. 0.061

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