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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 580 · 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. 1.8.35 + 6.6 = ? (a) 9.01 (b) 14.95 (c) 15.05 (d) 14.85
  2. 2.What is the value of the digit 5 in 69.854? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  3. 3.2.63 + 1.6 = ? (a) 2.79 (b) 4.33 (c) 4.13 (d) 4.23
  4. 4.Which is the smallest: 0.078, 0.89, 0.723, 0.8? (a) 0.078 (b) 0.89 (c) 0.723 (d) 0.8
  5. 5.What is the value of the digit 8 in 24.958? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  6. 6.What is the value of the digit 6 in 63.215? (a) 6 (b) 60 (c) 0.6 (d) 0.06
  7. 7.What is the value of the digit 1 in 49.513? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  8. 8.Which is the greatest: 0.036, 0.52, 0.5, 0.423? (a) 0.036 (b) 0.52 (c) 0.5 (d) 0.423
  9. 9.Which is the smallest: 0.2, 0.035, 0.121, 0.26? (a) 0.2 (b) 0.035 (c) 0.121 (d) 0.26
  10. 10.Which is the greatest: 0.078, 0.38, 0.3, 0.278? (a) 0.078 (b) 0.38 (c) 0.3 (d) 0.278
  11. 11.6.61 + 7.7 = ? (a) 14.41 (b) 14.21 (c) 7.38 (d) 14.31
  12. 12.What is the value of the digit 4 in 71.254? (a) 0.004 (b) 4 (c) 0.04 (d) 0.4
  13. 13.Which is the greatest: 0.7, 0.73, 0.612, 0.048? (a) 0.7 (b) 0.73 (c) 0.612 (d) 0.048
  14. 14.What is the value of the digit 6 in 42.679? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  15. 15.9.94 + 1.3 = ? (a) 11.24 (b) 11.14 (c) 10.07 (d) 11.34
  16. 16.Which is the greatest: 0.3, 0.39, 0.231, 0.029? (a) 0.3 (b) 0.39 (c) 0.231 (d) 0.029
  17. 17.5.06 + 2.7 = ? (a) 7.76 (b) 7.66 (c) 5.33 (d) 7.86
  18. 18.4.79 + 4.7 = ? (a) 5.26 (b) 9.59 (c) 9.39 (d) 9.49
  19. 19.Which is the smallest: 0.016, 0.4, 0.41, 0.332? (a) 0.016 (b) 0.4 (c) 0.41 (d) 0.332
  20. 20.5.02 + 5.4 = ? (a) 5.56 (b) 10.32 (c) 10.42 (d) 10.52
  21. 21.What is the value of the digit 6 in 24.856? (a) 0.006 (b) 0.06 (c) 6 (d) 0.6
  22. 22.Which is the greatest: 0.091, 0.35, 0.3, 0.214? (a) 0.091 (b) 0.35 (c) 0.3 (d) 0.214
  23. 23.2.32 + 2.6 = ? (a) 4.92 (b) 4.82 (c) 5.02 (d) 2.58
  24. 24.Which is the greatest: 0.3, 0.051, 0.229, 0.38? (a) 0.3 (b) 0.051 (c) 0.229 (d) 0.38
  25. 25.1.63 + 1.5 = ? (a) 3.23 (b) 3.13 (c) 1.78 (d) 3.03
  26. 26.What is the value of the digit 3 in 32.596? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  27. 27.What is the value of the digit 1 in 18.534? (a) 1 (b) 0.01 (c) 0.1 (d) 10
  28. 28.Which is the greatest: 0.68, 0.029, 0.556, 0.6? (a) 0.68 (b) 0.029 (c) 0.556 (d) 0.6
  29. 29.9.96 + 5.9 = ? (a) 10.55 (b) 15.96 (c) 15.76 (d) 15.86
  30. 30.6.88 + 4.7 = ? (a) 11.48 (b) 11.68 (c) 11.58 (d) 7.35
  31. 31.Which is the greatest: 0.23, 0.036, 0.141, 0.2? (a) 0.23 (b) 0.036 (c) 0.141 (d) 0.2
  32. 32.1.87 + 5.6 = ? (a) 7.47 (b) 7.57 (c) 2.43 (d) 7.37
  33. 33.What is the value of the digit 7 in 47.263? (a) 0.07 (b) 70 (c) 0.7 (d) 7
  34. 34.6.37 + 8.3 = ? (a) 14.67 (b) 14.77 (c) 14.57 (d) 7.2
  35. 35.What is the value of the digit 2 in 78.129? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  36. 36.Which is the smallest: 0.34, 0.023, 0.251, 0.3? (a) 0.34 (b) 0.023 (c) 0.251 (d) 0.3
  37. 37.3.08 + 8.9 = ? (a) 3.97 (b) 12.08 (c) 11.98 (d) 11.88
  38. 38.What is the value of the digit 2 in 62.379? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  39. 39.Which is the greatest: 0.2, 0.155, 0.044, 0.24? (a) 0.2 (b) 0.155 (c) 0.044 (d) 0.24
  40. 40.Which is the smallest: 0.716, 0.016, 0.8, 0.83? (a) 0.716 (b) 0.016 (c) 0.8 (d) 0.83

Answer key

  1. 14.95
  2. 0.05
  3. 4.23
  4. 0.078
  5. 0.008
  6. 60
  7. 0.01
  8. 0.52
  9. 0.035
  10. 0.38
  11. 14.31
  12. 0.004
  13. 0.73
  14. 0.6
  15. 11.24
  16. 0.39
  17. 7.76
  18. 9.49
  19. 0.016
  20. 10.42
  21. 0.006
  22. 0.35
  23. 4.92
  24. 0.38
  25. 3.13
  26. 30
  27. 10
  28. 0.68
  29. 15.86
  30. 11.58
  31. 0.23
  32. 7.47
  33. 7
  34. 14.67
  35. 0.02
  36. 0.023
  37. 11.98
  38. 2
  39. 0.24
  40. 0.016

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