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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 792 · 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. 1.9.38 + 8.3 = ? (a) 17.68 (b) 17.58 (c) 10.21 (d) 17.78
  2. 2.Which is the smallest: 0.022, 0.38, 0.3, 0.281? (a) 0.022 (b) 0.38 (c) 0.3 (d) 0.281
  3. 3.7.96 + 2.9 = ? (a) 8.25 (b) 10.86 (c) 10.96 (d) 10.76
  4. 4.7.67 + 6.5 = ? (a) 14.07 (b) 14.17 (c) 8.32 (d) 14.27
  5. 5.9.41 + 6.1 = ? (a) 10.02 (b) 15.61 (c) 15.51 (d) 15.41
  6. 6.What is the value of the digit 6 in 13.796? (a) 0.6 (b) 6 (c) 0.006 (d) 0.06
  7. 7.7.41 + 6.8 = ? (a) 14.11 (b) 14.31 (c) 8.09 (d) 14.21
  8. 8.6.23 + 8.2 = ? (a) 7.05 (b) 14.33 (c) 14.53 (d) 14.43
  9. 9.2.93 + 6.1 = ? (a) 8.93 (b) 9.03 (c) 3.54 (d) 9.13
  10. 10.1.08 + 8.6 = ? (a) 1.94 (b) 9.68 (c) 9.78 (d) 9.58
  11. 11.What is the value of the digit 3 in 17.543? (a) 0.03 (b) 0.003 (c) 0.3 (d) 3
  12. 12.Which is the greatest: 0.327, 0.043, 0.42, 0.4? (a) 0.327 (b) 0.043 (c) 0.42 (d) 0.4
  13. 13.4.34 + 3.1 = ? (a) 7.54 (b) 7.34 (c) 4.65 (d) 7.44
  14. 14.5.92 + 4.9 = ? (a) 10.72 (b) 10.82 (c) 10.92 (d) 6.41
  15. 15.5.43 + 4.2 = ? (a) 9.53 (b) 5.85 (c) 9.63 (d) 9.73
  16. 16.What is the value of the digit 3 in 81.537? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  17. 17.Which is the smallest: 0.41, 0.4, 0.386, 0.051? (a) 0.41 (b) 0.4 (c) 0.386 (d) 0.051
  18. 18.7.31 + 8.8 = ? (a) 16.01 (b) 16.11 (c) 16.21 (d) 8.19
  19. 19.Which is the smallest: 0.78, 0.7, 0.615, 0.055? (a) 0.78 (b) 0.7 (c) 0.615 (d) 0.055
  20. 20.Which is the greatest: 0.8, 0.81, 0.033, 0.769? (a) 0.8 (b) 0.81 (c) 0.033 (d) 0.769
  21. 21.5.82 + 9.8 = ? (a) 6.8 (b) 15.72 (c) 15.62 (d) 15.52
  22. 22.3.71 + 4.8 = ? (a) 8.41 (b) 8.51 (c) 8.61 (d) 4.19
  23. 23.Which is the greatest: 0.34, 0.214, 0.025, 0.3? (a) 0.34 (b) 0.214 (c) 0.025 (d) 0.3
  24. 24.What is the value of the digit 3 in 63.521? (a) 30 (b) 0.3 (c) 0.03 (d) 3
  25. 25.What is the value of the digit 1 in 43.751? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  26. 26.Which is the greatest: 0.495, 0.065, 0.52, 0.5? (a) 0.495 (b) 0.065 (c) 0.52 (d) 0.5
  27. 27.6.41 + 1.5 = ? (a) 7.91 (b) 7.81 (c) 8.01 (d) 6.56
  28. 28.Which is the smallest: 0.355, 0.4, 0.47, 0.064? (a) 0.355 (b) 0.4 (c) 0.47 (d) 0.064
  29. 29.2.81 + 2.4 = ? (a) 5.21 (b) 3.05 (c) 5.11 (d) 5.31
  30. 30.2.98 + 2.3 = ? (a) 5.18 (b) 3.21 (c) 5.28 (d) 5.38
  31. 31.5.58 + 9.1 = ? (a) 14.58 (b) 6.49 (c) 14.68 (d) 14.78
  32. 32.What is the value of the digit 6 in 79.526? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  33. 33.9.85 + 2.4 = ? (a) 10.09 (b) 12.25 (c) 12.15 (d) 12.35
  34. 34.Which is the greatest: 0.188, 0.29, 0.032, 0.2? (a) 0.188 (b) 0.29 (c) 0.032 (d) 0.2
  35. 35.What is the value of the digit 2 in 72.896? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  36. 36.5.68 + 5.8 = ? (a) 11.38 (b) 11.58 (c) 11.48 (d) 6.26
  37. 37.7.45 + 6.5 = ? (a) 13.95 (b) 14.05 (c) 8.1 (d) 13.85
  38. 38.What is the value of the digit 2 in 28.915? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  39. 39.6.31 + 3.9 = ? (a) 6.7 (b) 10.11 (c) 10.21 (d) 10.31
  40. 40.Which is the greatest: 0.265, 0.3, 0.37, 0.041? (a) 0.265 (b) 0.3 (c) 0.37 (d) 0.041

Answer key

  1. 17.68
  2. 0.022
  3. 10.86
  4. 14.17
  5. 15.51
  6. 0.006
  7. 14.21
  8. 14.43
  9. 9.03
  10. 9.68
  11. 0.003
  12. 0.42
  13. 7.44
  14. 10.82
  15. 9.63
  16. 0.03
  17. 0.051
  18. 16.11
  19. 0.055
  20. 0.81
  21. 15.62
  22. 8.51
  23. 0.34
  24. 3
  25. 0.001
  26. 0.52
  27. 7.91
  28. 0.064
  29. 5.21
  30. 5.28
  31. 14.68
  32. 0.006
  33. 12.25
  34. 0.29
  35. 2
  36. 11.48
  37. 13.95
  38. 20
  39. 10.21
  40. 0.37

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