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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 483 · 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. 1.1.05 + 2.9 = ? (a) 3.85 (b) 4.05 (c) 1.34 (d) 3.95
  2. 2.What is the value of the digit 1 in 19.876? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  3. 3.1.69 + 1.8 = ? (a) 3.59 (b) 3.49 (c) 1.87 (d) 3.39
  4. 4.What is the value of the digit 2 in 62.813? (a) 2 (b) 20 (c) 0.2 (d) 0.02
  5. 5.9.81 + 5.7 = ? (a) 10.38 (b) 15.61 (c) 15.51 (d) 15.41
  6. 6.2.24 + 6.2 = ? (a) 8.54 (b) 8.34 (c) 8.44 (d) 2.86
  7. 7.Which is the smallest: 0.732, 0.046, 0.87, 0.8? (a) 0.732 (b) 0.046 (c) 0.87 (d) 0.8
  8. 8.8.17 + 6.3 = ? (a) 8.8 (b) 14.37 (c) 14.57 (d) 14.47
  9. 9.1.82 + 9.1 = ? (a) 2.73 (b) 11.02 (c) 10.82 (d) 10.92
  10. 10.9.03 + 4.8 = ? (a) 9.51 (b) 13.93 (c) 13.73 (d) 13.83
  11. 11.What is the value of the digit 6 in 62.871? (a) 0.6 (b) 6 (c) 60 (d) 0.06
  12. 12.Which is the smallest: 0.28, 0.185, 0.021, 0.2? (a) 0.28 (b) 0.185 (c) 0.021 (d) 0.2
  13. 13.What is the value of the digit 9 in 13.798? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  14. 14.What is the value of the digit 4 in 21.749? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  15. 15.Which is the smallest: 0.722, 0.81, 0.8, 0.059? (a) 0.722 (b) 0.81 (c) 0.8 (d) 0.059
  16. 16.Which is the smallest: 0.036, 0.2, 0.28, 0.153? (a) 0.036 (b) 0.2 (c) 0.28 (d) 0.153
  17. 17.1.31 + 3.3 = ? (a) 4.71 (b) 4.51 (c) 4.61 (d) 1.64
  18. 18.9.32 + 9.2 = ? (a) 18.62 (b) 18.52 (c) 18.42 (d) 10.24
  19. 19.1.15 + 2.2 = ? (a) 3.45 (b) 3.35 (c) 3.25 (d) 1.37
  20. 20.Which is the greatest: 0.063, 0.87, 0.8, 0.723? (a) 0.063 (b) 0.87 (c) 0.8 (d) 0.723
  21. 21.Which is the smallest: 0.2, 0.141, 0.034, 0.25? (a) 0.2 (b) 0.141 (c) 0.034 (d) 0.25
  22. 22.3.59 + 6.7 = ? (a) 10.29 (b) 4.26 (c) 10.39 (d) 10.19
  23. 23.3.16 + 8.8 = ? (a) 4.04 (b) 11.86 (c) 11.96 (d) 12.06
  24. 24.4.46 + 9.6 = ? (a) 13.96 (b) 5.42 (c) 14.16 (d) 14.06
  25. 25.Which is the smallest: 0.774, 0.83, 0.012, 0.8? (a) 0.774 (b) 0.83 (c) 0.012 (d) 0.8
  26. 26.What is the value of the digit 2 in 67.528? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  27. 27.Which is the greatest: 0.48, 0.389, 0.056, 0.4? (a) 0.48 (b) 0.389 (c) 0.056 (d) 0.4
  28. 28.6.82 + 2.9 = ? (a) 9.72 (b) 9.82 (c) 7.11 (d) 9.62
  29. 29.What is the value of the digit 4 in 26.147? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  30. 30.7.77 + 1.1 = ? (a) 8.77 (b) 8.87 (c) 7.88 (d) 8.97
  31. 31.Which is the smallest: 0.787, 0.079, 0.8, 0.81? (a) 0.787 (b) 0.079 (c) 0.8 (d) 0.81
  32. 32.What is the value of the digit 5 in 25.168? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  33. 33.Which is the smallest: 0.089, 0.39, 0.3, 0.291? (a) 0.089 (b) 0.39 (c) 0.3 (d) 0.291
  34. 34.Which is the greatest: 0.7, 0.72, 0.042, 0.618? (a) 0.7 (b) 0.72 (c) 0.042 (d) 0.618
  35. 35.Which is the greatest: 0.374, 0.069, 0.44, 0.4? (a) 0.374 (b) 0.069 (c) 0.44 (d) 0.4
  36. 36.Which is the greatest: 0.33, 0.261, 0.3, 0.038? (a) 0.33 (b) 0.261 (c) 0.3 (d) 0.038
  37. 37.5.89 + 4.1 = ? (a) 9.89 (b) 10.09 (c) 9.99 (d) 6.3
  38. 38.Which is the smallest: 0.2, 0.094, 0.162, 0.28? (a) 0.2 (b) 0.094 (c) 0.162 (d) 0.28
  39. 39.What is the value of the digit 3 in 75.843? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  40. 40.What is the value of the digit 8 in 87.625? (a) 0.08 (b) 0.8 (c) 80 (d) 8

Answer key

  1. 3.95
  2. 10
  3. 3.49
  4. 2
  5. 15.51
  6. 8.44
  7. 0.046
  8. 14.47
  9. 10.92
  10. 13.83
  11. 60
  12. 0.021
  13. 0.09
  14. 0.04
  15. 0.059
  16. 0.036
  17. 4.61
  18. 18.52
  19. 3.35
  20. 0.87
  21. 0.034
  22. 10.29
  23. 11.96
  24. 14.06
  25. 0.012
  26. 0.02
  27. 0.48
  28. 9.72
  29. 0.04
  30. 8.87
  31. 0.079
  32. 5
  33. 0.089
  34. 0.72
  35. 0.44
  36. 0.33
  37. 9.99
  38. 0.094
  39. 0.003
  40. 80

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