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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 220 · 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. 1.8.12 + 6.2 = ? (a) 14.32 (b) 14.42 (c) 8.74 (d) 14.22
  2. 2.What is the value of the digit 2 in 46.821? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  3. 3.6.54 + 8.1 = ? (a) 14.54 (b) 14.64 (c) 7.35 (d) 14.74
  4. 4.What is the value of the digit 2 in 12.358? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  5. 5.5.04 + 7.8 = ? (a) 12.84 (b) 5.82 (c) 12.94 (d) 12.74
  6. 6.5.75 + 1.3 = ? (a) 6.95 (b) 7.15 (c) 5.88 (d) 7.05
  7. 7.Which is the smallest: 0.718, 0.82, 0.8, 0.063? (a) 0.718 (b) 0.82 (c) 0.8 (d) 0.063
  8. 8.What is the value of the digit 3 in 75.386? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  9. 9.1.17 + 1.3 = ? (a) 2.47 (b) 2.37 (c) 2.57 (d) 1.3
  10. 10.3.35 + 1.8 = ? (a) 3.53 (b) 5.05 (c) 5.15 (d) 5.25
  11. 11.What is the value of the digit 1 in 17.358? (a) 0.1 (b) 0.01 (c) 10 (d) 1
  12. 12.What is the value of the digit 7 in 71.894? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  13. 13.5.99 + 3.4 = ? (a) 9.29 (b) 6.33 (c) 9.39 (d) 9.49
  14. 14.What is the value of the digit 3 in 83.296? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  15. 15.What is the value of the digit 9 in 45.397? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  16. 16.3.42 + 3.2 = ? (a) 6.52 (b) 3.74 (c) 6.62 (d) 6.72
  17. 17.1.93 + 2.1 = ? (a) 4.03 (b) 3.93 (c) 2.14 (d) 4.13
  18. 18.What is the value of the digit 3 in 87.913? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  19. 19.What is the value of the digit 9 in 71.589? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  20. 20.What is the value of the digit 7 in 61.397? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  21. 21.Which is the smallest: 0.43, 0.329, 0.023, 0.4? (a) 0.43 (b) 0.329 (c) 0.023 (d) 0.4
  22. 22.What is the value of the digit 9 in 92.875? (a) 0.9 (b) 90 (c) 9 (d) 0.09
  23. 23.Which is the smallest: 0.8, 0.718, 0.017, 0.87? (a) 0.8 (b) 0.718 (c) 0.017 (d) 0.87
  24. 24.Which is the greatest: 0.8, 0.87, 0.037, 0.739? (a) 0.8 (b) 0.87 (c) 0.037 (d) 0.739
  25. 25.Which is the greatest: 0.85, 0.8, 0.731, 0.063? (a) 0.85 (b) 0.8 (c) 0.731 (d) 0.063
  26. 26.Which is the greatest: 0.49, 0.4, 0.039, 0.346? (a) 0.49 (b) 0.4 (c) 0.039 (d) 0.346
  27. 27.8.87 + 2.9 = ? (a) 9.16 (b) 11.67 (c) 11.77 (d) 11.87
  28. 28.What is the value of the digit 5 in 35.291? (a) 0.05 (b) 50 (c) 0.5 (d) 5
  29. 29.What is the value of the digit 8 in 89.634? (a) 0.8 (b) 8 (c) 0.08 (d) 80
  30. 30.4.02 + 6.7 = ? (a) 10.72 (b) 4.69 (c) 10.82 (d) 10.62
  31. 31.What is the value of the digit 4 in 52.984? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  32. 32.6.32 + 5.1 = ? (a) 6.83 (b) 11.42 (c) 11.52 (d) 11.32
  33. 33.1.19 + 3.7 = ? (a) 1.56 (b) 4.89 (c) 4.99 (d) 4.79
  34. 34.6.96 + 2.7 = ? (a) 9.56 (b) 9.76 (c) 9.66 (d) 7.23
  35. 35.What is the value of the digit 1 in 17.896? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  36. 36.2.18 + 3.7 = ? (a) 2.55 (b) 5.78 (c) 5.88 (d) 5.98
  37. 37.Which is the greatest: 0.4, 0.059, 0.43, 0.379? (a) 0.4 (b) 0.059 (c) 0.43 (d) 0.379
  38. 38.Which is the greatest: 0.041, 0.413, 0.53, 0.5? (a) 0.041 (b) 0.413 (c) 0.53 (d) 0.5
  39. 39.What is the value of the digit 4 in 49.235? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  40. 40.9.39 + 5.1 = ? (a) 14.49 (b) 14.59 (c) 9.9 (d) 14.39

Answer key

  1. 14.32
  2. 0.02
  3. 14.64
  4. 2
  5. 12.84
  6. 7.05
  7. 0.063
  8. 0.3
  9. 2.47
  10. 5.15
  11. 10
  12. 70
  13. 9.39
  14. 3
  15. 0.09
  16. 6.62
  17. 4.03
  18. 0.003
  19. 0.009
  20. 0.007
  21. 0.023
  22. 90
  23. 0.017
  24. 0.87
  25. 0.85
  26. 0.49
  27. 11.77
  28. 5
  29. 80
  30. 10.72
  31. 0.004
  32. 11.42
  33. 4.89
  34. 9.66
  35. 10
  36. 5.88
  37. 0.43
  38. 0.53
  39. 40
  40. 14.49

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