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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 703 · 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. 1.7.72 + 2.4 = ? (a) 7.96 (b) 10.12 (c) 10.02 (d) 10.22
  2. 2.What is the value of the digit 3 in 32.846? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  3. 3.4.38 + 6.7 = ? (a) 11.08 (b) 10.98 (c) 11.18 (d) 5.05
  4. 4.What is the value of the digit 3 in 39.286? (a) 30 (b) 0.3 (c) 3 (d) 0.03
  5. 5.6.22 + 7.8 = ? (a) 7 (b) 14.12 (c) 14.02 (d) 13.92
  6. 6.7.62 + 4.5 = ? (a) 12.22 (b) 12.12 (c) 12.02 (d) 8.07
  7. 7.What is the value of the digit 8 in 85.172? (a) 80 (b) 0.8 (c) 8 (d) 0.08
  8. 8.6.95 + 1.1 = ? (a) 7.95 (b) 8.05 (c) 8.15 (d) 7.06
  9. 9.6.33 + 7.7 = ? (a) 14.13 (b) 7.1 (c) 13.93 (d) 14.03
  10. 10.Which is the smallest: 0.029, 0.7, 0.71, 0.615? (a) 0.029 (b) 0.7 (c) 0.71 (d) 0.615
  11. 11.What is the value of the digit 3 in 12.839? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  12. 12.Which is the smallest: 0.32, 0.3, 0.028, 0.284? (a) 0.32 (b) 0.3 (c) 0.028 (d) 0.284
  13. 13.Which is the smallest: 0.439, 0.59, 0.5, 0.029? (a) 0.439 (b) 0.59 (c) 0.5 (d) 0.029
  14. 14.Which is the greatest: 0.32, 0.3, 0.296, 0.074? (a) 0.32 (b) 0.3 (c) 0.296 (d) 0.074
  15. 15.Which is the greatest: 0.015, 0.584, 0.6, 0.62? (a) 0.015 (b) 0.584 (c) 0.6 (d) 0.62
  16. 16.3.08 + 6.4 = ? (a) 3.72 (b) 9.38 (c) 9.58 (d) 9.48
  17. 17.4.95 + 8.8 = ? (a) 13.75 (b) 5.83 (c) 13.85 (d) 13.65
  18. 18.7.63 + 4.9 = ? (a) 12.43 (b) 12.63 (c) 12.53 (d) 8.12
  19. 19.Which is the greatest: 0.52, 0.085, 0.427, 0.5? (a) 0.52 (b) 0.085 (c) 0.427 (d) 0.5
  20. 20.1.97 + 4.7 = ? (a) 2.44 (b) 6.67 (c) 6.57 (d) 6.77
  21. 21.Which is the smallest: 0.143, 0.22, 0.092, 0.2? (a) 0.143 (b) 0.22 (c) 0.092 (d) 0.2
  22. 22.What is the value of the digit 1 in 91.748? (a) 10 (b) 0.01 (c) 1 (d) 0.1
  23. 23.Which is the greatest: 0.298, 0.3, 0.38, 0.012? (a) 0.298 (b) 0.3 (c) 0.38 (d) 0.012
  24. 24.What is the value of the digit 6 in 47.365? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  25. 25.What is the value of the digit 3 in 71.364? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  26. 26.3.25 + 1.4 = ? (a) 4.75 (b) 3.39 (c) 4.65 (d) 4.55
  27. 27.7.35 + 8.7 = ? (a) 8.22 (b) 16.15 (c) 15.95 (d) 16.05
  28. 28.Which is the greatest: 0.47, 0.011, 0.351, 0.4? (a) 0.47 (b) 0.011 (c) 0.351 (d) 0.4
  29. 29.What is the value of the digit 5 in 15.374? (a) 0.5 (b) 0.05 (c) 5 (d) 50
  30. 30.4.85 + 9.5 = ? (a) 5.8 (b) 14.45 (c) 14.35 (d) 14.25
  31. 31.What is the value of the digit 8 in 59.843? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  32. 32.What is the value of the digit 5 in 13.825? (a) 0.005 (b) 0.5 (c) 5 (d) 0.05
  33. 33.2.11 + 9.8 = ? (a) 11.81 (b) 11.91 (c) 12.01 (d) 3.09
  34. 34.9.99 + 2.3 = ? (a) 12.19 (b) 12.39 (c) 10.22 (d) 12.29
  35. 35.3.23 + 3.8 = ? (a) 3.61 (b) 6.93 (c) 7.13 (d) 7.03
  36. 36.Which is the greatest: 0.8, 0.034, 0.753, 0.82? (a) 0.8 (b) 0.034 (c) 0.753 (d) 0.82
  37. 37.1.61 + 4.6 = ? (a) 6.11 (b) 6.31 (c) 2.07 (d) 6.21
  38. 38.8.29 + 2.8 = ? (a) 10.99 (b) 8.57 (c) 11.09 (d) 11.19
  39. 39.2.69 + 3.2 = ? (a) 5.99 (b) 5.79 (c) 3.01 (d) 5.89
  40. 40.Which is the smallest: 0.5, 0.437, 0.054, 0.58? (a) 0.5 (b) 0.437 (c) 0.054 (d) 0.58

Answer key

  1. 10.12
  2. 30
  3. 11.08
  4. 30
  5. 14.02
  6. 12.12
  7. 80
  8. 8.05
  9. 14.03
  10. 0.029
  11. 0.03
  12. 0.028
  13. 0.029
  14. 0.32
  15. 0.62
  16. 9.48
  17. 13.75
  18. 12.53
  19. 0.52
  20. 6.67
  21. 0.092
  22. 1
  23. 0.38
  24. 0.06
  25. 0.3
  26. 4.65
  27. 16.05
  28. 0.47
  29. 5
  30. 14.35
  31. 0.8
  32. 0.005
  33. 11.91
  34. 12.29
  35. 7.03
  36. 0.82
  37. 6.21
  38. 11.09
  39. 5.89
  40. 0.054

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