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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 681 · 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. 1.9.57 + 2.4 = ? (a) 11.87 (b) 11.97 (c) 9.81 (d) 12.07
  2. 2.Which is the smallest: 0.051, 0.449, 0.5, 0.59? (a) 0.051 (b) 0.449 (c) 0.5 (d) 0.59
  3. 3.What is the value of the digit 8 in 49.827? (a) 0.008 (b) 0.8 (c) 0.08 (d) 8
  4. 4.8.68 + 5.3 = ? (a) 13.98 (b) 14.08 (c) 13.88 (d) 9.21
  5. 5.What is the value of the digit 6 in 93.865? (a) 0.6 (b) 0.006 (c) 6 (d) 0.06
  6. 6.What is the value of the digit 4 in 64.381? (a) 4 (b) 0.4 (c) 0.04 (d) 40
  7. 7.Which is the smallest: 0.771, 0.085, 0.8, 0.86? (a) 0.771 (b) 0.085 (c) 0.8 (d) 0.86
  8. 8.What is the value of the digit 6 in 52.679? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  9. 9.2.01 + 8.3 = ? (a) 10.31 (b) 10.41 (c) 10.21 (d) 2.84
  10. 10.7.69 + 8.1 = ? (a) 15.69 (b) 15.89 (c) 8.5 (d) 15.79
  11. 11.What is the value of the digit 3 in 95.386? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  12. 12.Which is the smallest: 0.072, 0.69, 0.585, 0.6? (a) 0.072 (b) 0.69 (c) 0.585 (d) 0.6
  13. 13.What is the value of the digit 3 in 32.694? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  14. 14.2.34 + 1.5 = ? (a) 3.84 (b) 3.74 (c) 2.49 (d) 3.94
  15. 15.5.89 + 7.4 = ? (a) 13.29 (b) 6.63 (c) 13.39 (d) 13.19
  16. 16.Which is the greatest: 0.514, 0.6, 0.61, 0.073? (a) 0.514 (b) 0.6 (c) 0.61 (d) 0.073
  17. 17.6.43 + 9.5 = ? (a) 7.38 (b) 15.93 (c) 15.83 (d) 16.03
  18. 18.Which is the greatest: 0.095, 0.34, 0.3, 0.254? (a) 0.095 (b) 0.34 (c) 0.3 (d) 0.254
  19. 19.What is the value of the digit 4 in 35.479? (a) 4 (b) 0.4 (c) 0.04 (d) 0.004
  20. 20.Which is the smallest: 0.74, 0.654, 0.7, 0.093? (a) 0.74 (b) 0.654 (c) 0.7 (d) 0.093
  21. 21.Which is the smallest: 0.718, 0.029, 0.88, 0.8? (a) 0.718 (b) 0.029 (c) 0.88 (d) 0.8
  22. 22.2.84 + 5.1 = ? (a) 7.84 (b) 7.94 (c) 3.35 (d) 8.04
  23. 23.Which is the greatest: 0.049, 0.423, 0.5, 0.53? (a) 0.049 (b) 0.423 (c) 0.5 (d) 0.53
  24. 24.What is the value of the digit 6 in 64.295? (a) 0.6 (b) 6 (c) 60 (d) 0.06
  25. 25.What is the value of the digit 5 in 53.426? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  26. 26.What is the value of the digit 5 in 25.671? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  27. 27.What is the value of the digit 8 in 27.845? (a) 8 (b) 0.08 (c) 0.008 (d) 0.8
  28. 28.What is the value of the digit 2 in 25.419? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  29. 29.2.66 + 8.3 = ? (a) 3.49 (b) 11.06 (c) 10.86 (d) 10.96
  30. 30.What is the value of the digit 3 in 39.815? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  31. 31.Which is the greatest: 0.5, 0.432, 0.57, 0.025? (a) 0.5 (b) 0.432 (c) 0.57 (d) 0.025
  32. 32.Which is the greatest: 0.243, 0.3, 0.065, 0.33? (a) 0.243 (b) 0.3 (c) 0.065 (d) 0.33
  33. 33.8.36 + 6.1 = ? (a) 14.46 (b) 14.36 (c) 8.97 (d) 14.56
  34. 34.Which is the smallest: 0.61, 0.536, 0.6, 0.065? (a) 0.61 (b) 0.536 (c) 0.6 (d) 0.065
  35. 35.8.11 + 8.6 = ? (a) 8.97 (b) 16.71 (c) 16.81 (d) 16.61
  36. 36.What is the value of the digit 6 in 31.296? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  37. 37.What is the value of the digit 6 in 78.265? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  38. 38.1.82 + 8.6 = ? (a) 10.52 (b) 10.42 (c) 10.32 (d) 2.68
  39. 39.What is the value of the digit 1 in 51.983? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  40. 40.What is the value of the digit 3 in 39.567? (a) 0.3 (b) 3 (c) 0.03 (d) 30

Answer key

  1. 11.97
  2. 0.051
  3. 0.8
  4. 13.98
  5. 0.06
  6. 4
  7. 0.085
  8. 0.6
  9. 10.31
  10. 15.79
  11. 0.3
  12. 0.072
  13. 30
  14. 3.84
  15. 13.29
  16. 0.61
  17. 15.93
  18. 0.34
  19. 0.4
  20. 0.093
  21. 0.029
  22. 7.94
  23. 0.53
  24. 60
  25. 50
  26. 5
  27. 0.8
  28. 20
  29. 10.96
  30. 30
  31. 0.57
  32. 0.33
  33. 14.46
  34. 0.065
  35. 16.71
  36. 0.006
  37. 0.06
  38. 10.42
  39. 1
  40. 30

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