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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 630 · 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 greatest: 0.071, 0.4, 0.366, 0.47? (a) 0.071 (b) 0.4 (c) 0.366 (d) 0.47
  2. 2.8.23 + 4.5 = ? (a) 12.63 (b) 8.68 (c) 12.83 (d) 12.73
  3. 3.What is the value of the digit 7 in 84.763? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  4. 4.6.32 + 9.2 = ? (a) 7.24 (b) 15.42 (c) 15.52 (d) 15.62
  5. 5.Which is the greatest: 0.6, 0.66, 0.574, 0.099? (a) 0.6 (b) 0.66 (c) 0.574 (d) 0.099
  6. 6.Which is the smallest: 0.25, 0.2, 0.015, 0.197? (a) 0.25 (b) 0.2 (c) 0.015 (d) 0.197
  7. 7.Which is the smallest: 0.071, 0.75, 0.676, 0.7? (a) 0.071 (b) 0.75 (c) 0.676 (d) 0.7
  8. 8.Which is the greatest: 0.045, 0.88, 0.8, 0.756? (a) 0.045 (b) 0.88 (c) 0.8 (d) 0.756
  9. 9.6.33 + 6.1 = ? (a) 6.94 (b) 12.43 (c) 12.53 (d) 12.33
  10. 10.Which is the greatest: 0.596, 0.63, 0.6, 0.047? (a) 0.596 (b) 0.63 (c) 0.6 (d) 0.047
  11. 11.Which is the smallest: 0.152, 0.23, 0.034, 0.2? (a) 0.152 (b) 0.23 (c) 0.034 (d) 0.2
  12. 12.What is the value of the digit 2 in 39.625? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  13. 13.Which is the greatest: 0.5, 0.429, 0.054, 0.53? (a) 0.5 (b) 0.429 (c) 0.054 (d) 0.53
  14. 14.Which is the greatest: 0.144, 0.28, 0.057, 0.2? (a) 0.144 (b) 0.28 (c) 0.057 (d) 0.2
  15. 15.Which is the greatest: 0.078, 0.5, 0.58, 0.447? (a) 0.078 (b) 0.5 (c) 0.58 (d) 0.447
  16. 16.What is the value of the digit 2 in 31.245? (a) 0.002 (b) 0.2 (c) 0.02 (d) 2
  17. 17.7.41 + 1.3 = ? (a) 8.71 (b) 7.54 (c) 8.61 (d) 8.81
  18. 18.6.81 + 4.8 = ? (a) 11.51 (b) 11.61 (c) 11.71 (d) 7.29
  19. 19.What is the value of the digit 3 in 39.281? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  20. 20.What is the value of the digit 7 in 16.497? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  21. 21.Which is the smallest: 0.152, 0.038, 0.22, 0.2? (a) 0.152 (b) 0.038 (c) 0.22 (d) 0.2
  22. 22.9.81 + 3.5 = ? (a) 13.21 (b) 10.16 (c) 13.41 (d) 13.31
  23. 23.Which is the smallest: 0.051, 0.147, 0.27, 0.2? (a) 0.051 (b) 0.147 (c) 0.27 (d) 0.2
  24. 24.4.33 + 3.8 = ? (a) 4.71 (b) 8.03 (c) 8.23 (d) 8.13
  25. 25.What is the value of the digit 4 in 79.645? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  26. 26.7.11 + 7.3 = ? (a) 14.51 (b) 14.31 (c) 7.84 (d) 14.41
  27. 27.What is the value of the digit 5 in 81.745? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  28. 28.Which is the greatest: 0.065, 0.2, 0.156, 0.26? (a) 0.065 (b) 0.2 (c) 0.156 (d) 0.26
  29. 29.7.91 + 8.1 = ? (a) 16.11 (b) 16.01 (c) 15.91 (d) 8.72
  30. 30.What is the value of the digit 1 in 75.291? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  31. 31.What is the value of the digit 5 in 97.851? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  32. 32.What is the value of the digit 4 in 34.972? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  33. 33.Which is the smallest: 0.45, 0.083, 0.316, 0.4? (a) 0.45 (b) 0.083 (c) 0.316 (d) 0.4
  34. 34.3.81 + 4.1 = ? (a) 8.01 (b) 7.81 (c) 4.22 (d) 7.91
  35. 35.3.46 + 3.5 = ? (a) 3.81 (b) 7.06 (c) 6.96 (d) 6.86
  36. 36.Which is the smallest: 0.724, 0.043, 0.81, 0.8? (a) 0.724 (b) 0.043 (c) 0.81 (d) 0.8
  37. 37.Which is the smallest: 0.61, 0.535, 0.012, 0.6? (a) 0.61 (b) 0.535 (c) 0.012 (d) 0.6
  38. 38.What is the value of the digit 8 in 43.872? (a) 8 (b) 0.008 (c) 0.8 (d) 0.08
  39. 39.Which is the greatest: 0.794, 0.85, 0.088, 0.8? (a) 0.794 (b) 0.85 (c) 0.088 (d) 0.8
  40. 40.1.28 + 1.3 = ? (a) 1.41 (b) 2.48 (c) 2.58 (d) 2.68

Answer key

  1. 0.47
  2. 12.73
  3. 0.7
  4. 15.52
  5. 0.66
  6. 0.015
  7. 0.071
  8. 0.88
  9. 12.43
  10. 0.63
  11. 0.034
  12. 0.02
  13. 0.53
  14. 0.28
  15. 0.58
  16. 0.2
  17. 8.71
  18. 11.61
  19. 30
  20. 0.007
  21. 0.038
  22. 13.31
  23. 0.051
  24. 8.13
  25. 0.04
  26. 14.41
  27. 0.005
  28. 0.26
  29. 16.01
  30. 0.001
  31. 0.05
  32. 4
  33. 0.083
  34. 7.91
  35. 6.96
  36. 0.043
  37. 0.012
  38. 0.8
  39. 0.85
  40. 2.58

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