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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 357 · 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 1 in 15.468? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  2. 2.Which is the greatest: 0.57, 0.025, 0.419, 0.5? (a) 0.57 (b) 0.025 (c) 0.419 (d) 0.5
  3. 3.3.81 + 8.3 = ? (a) 12.11 (b) 4.64 (c) 12.21 (d) 12.01
  4. 4.3.08 + 3.2 = ? (a) 6.18 (b) 3.4 (c) 6.28 (d) 6.38
  5. 5.Which is the greatest: 0.29, 0.162, 0.2, 0.047? (a) 0.29 (b) 0.162 (c) 0.2 (d) 0.047
  6. 6.9.87 + 3.7 = ? (a) 13.57 (b) 13.47 (c) 10.24 (d) 13.67
  7. 7.Which is the greatest: 0.7, 0.76, 0.079, 0.671? (a) 0.7 (b) 0.76 (c) 0.079 (d) 0.671
  8. 8.Which is the smallest: 0.056, 0.4, 0.342, 0.41? (a) 0.056 (b) 0.4 (c) 0.342 (d) 0.41
  9. 9.Which is the smallest: 0.4, 0.331, 0.47, 0.092? (a) 0.4 (b) 0.331 (c) 0.47 (d) 0.092
  10. 10.1.51 + 3.1 = ? (a) 1.82 (b) 4.71 (c) 4.61 (d) 4.51
  11. 11.Which is the smallest: 0.5, 0.446, 0.064, 0.51? (a) 0.5 (b) 0.446 (c) 0.064 (d) 0.51
  12. 12.Which is the greatest: 0.82, 0.746, 0.8, 0.032? (a) 0.82 (b) 0.746 (c) 0.8 (d) 0.032
  13. 13.What is the value of the digit 8 in 59.847? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  14. 14.Which is the greatest: 0.83, 0.8, 0.072, 0.725? (a) 0.83 (b) 0.8 (c) 0.072 (d) 0.725
  15. 15.9.93 + 3.7 = ? (a) 10.3 (b) 13.53 (c) 13.63 (d) 13.73
  16. 16.Which is the greatest: 0.75, 0.035, 0.681, 0.7? (a) 0.75 (b) 0.035 (c) 0.681 (d) 0.7
  17. 17.4.15 + 2.3 = ? (a) 6.55 (b) 6.35 (c) 4.38 (d) 6.45
  18. 18.7.18 + 1.4 = ? (a) 7.32 (b) 8.48 (c) 8.68 (d) 8.58
  19. 19.9.02 + 2.1 = ? (a) 11.02 (b) 11.22 (c) 9.23 (d) 11.12
  20. 20.9.02 + 6.8 = ? (a) 9.7 (b) 15.92 (c) 15.82 (d) 15.72
  21. 21.What is the value of the digit 9 in 21.497? (a) 9 (b) 0.09 (c) 0.009 (d) 0.9
  22. 22.What is the value of the digit 2 in 27.315? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  23. 23.What is the value of the digit 4 in 47.368? (a) 0.4 (b) 0.04 (c) 4 (d) 40
  24. 24.7.27 + 2.5 = ? (a) 9.87 (b) 7.52 (c) 9.77 (d) 9.67
  25. 25.Which is the greatest: 0.63, 0.542, 0.089, 0.6? (a) 0.63 (b) 0.542 (c) 0.089 (d) 0.6
  26. 26.What is the value of the digit 5 in 82.765? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  27. 27.Which is the smallest: 0.084, 0.57, 0.5, 0.493? (a) 0.084 (b) 0.57 (c) 0.5 (d) 0.493
  28. 28.Which is the greatest: 0.38, 0.037, 0.3, 0.249? (a) 0.38 (b) 0.037 (c) 0.3 (d) 0.249
  29. 29.2.06 + 4.5 = ? (a) 2.51 (b) 6.46 (c) 6.66 (d) 6.56
  30. 30.Which is the greatest: 0.662, 0.7, 0.77, 0.076? (a) 0.662 (b) 0.7 (c) 0.77 (d) 0.076
  31. 31.5.06 + 8.6 = ? (a) 5.92 (b) 13.76 (c) 13.66 (d) 13.56
  32. 32.1.26 + 1.1 = ? (a) 2.46 (b) 2.26 (c) 1.37 (d) 2.36
  33. 33.1.88 + 1.4 = ? (a) 3.38 (b) 2.02 (c) 3.28 (d) 3.18
  34. 34.8.62 + 6.9 = ? (a) 9.31 (b) 15.62 (c) 15.42 (d) 15.52
  35. 35.5.19 + 2.1 = ? (a) 5.4 (b) 7.19 (c) 7.39 (d) 7.29
  36. 36.What is the value of the digit 5 in 38.675? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  37. 37.6.19 + 5.1 = ? (a) 11.29 (b) 11.19 (c) 6.7 (d) 11.39
  38. 38.What is the value of the digit 3 in 56.138? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  39. 39.1.19 + 9.1 = ? (a) 10.29 (b) 2.1 (c) 10.39 (d) 10.19
  40. 40.What is the value of the digit 6 in 78.269? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6

Answer key

  1. 10
  2. 0.57
  3. 12.11
  4. 6.28
  5. 0.29
  6. 13.57
  7. 0.76
  8. 0.056
  9. 0.092
  10. 4.61
  11. 0.064
  12. 0.82
  13. 0.8
  14. 0.83
  15. 13.63
  16. 0.75
  17. 6.45
  18. 8.58
  19. 11.12
  20. 15.82
  21. 0.09
  22. 20
  23. 40
  24. 9.77
  25. 0.63
  26. 0.005
  27. 0.084
  28. 0.38
  29. 6.56
  30. 0.77
  31. 13.66
  32. 2.36
  33. 3.28
  34. 15.52
  35. 7.29
  36. 0.005
  37. 11.29
  38. 0.03
  39. 10.29
  40. 0.06

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