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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 629 · 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.Which is the greatest: 0.014, 0.8, 0.713, 0.86? (a) 0.014 (b) 0.8 (c) 0.713 (d) 0.86
  2. 2.9.81 + 8.5 = ? (a) 18.21 (b) 18.41 (c) 10.66 (d) 18.31
  3. 3.7.71 + 9.1 = ? (a) 8.62 (b) 16.91 (c) 16.81 (d) 16.71
  4. 4.What is the value of the digit 1 in 61.827? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  5. 5.9.93 + 1.2 = ? (a) 11.13 (b) 11.03 (c) 11.23 (d) 10.05
  6. 6.What is the value of the digit 7 in 74.235? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  7. 7.Which is the smallest: 0.037, 0.42, 0.4, 0.312? (a) 0.037 (b) 0.42 (c) 0.4 (d) 0.312
  8. 8.What is the value of the digit 2 in 24.136? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  9. 9.What is the value of the digit 7 in 14.987? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  10. 10.2.81 + 1.4 = ? (a) 4.21 (b) 2.95 (c) 4.31 (d) 4.11
  11. 11.3.76 + 6.1 = ? (a) 4.37 (b) 9.96 (c) 9.86 (d) 9.76
  12. 12.2.16 + 8.6 = ? (a) 10.66 (b) 3.02 (c) 10.76 (d) 10.86
  13. 13.1.81 + 8.5 = ? (a) 10.31 (b) 10.41 (c) 2.66 (d) 10.21
  14. 14.3.99 + 2.7 = ? (a) 6.69 (b) 6.59 (c) 6.79 (d) 4.26
  15. 15.Which is the smallest: 0.33, 0.216, 0.3, 0.074? (a) 0.33 (b) 0.216 (c) 0.3 (d) 0.074
  16. 16.8.01 + 9.3 = ? (a) 17.41 (b) 8.94 (c) 17.31 (d) 17.21
  17. 17.What is the value of the digit 9 in 94.368? (a) 0.09 (b) 0.9 (c) 90 (d) 9
  18. 18.5.51 + 7.8 = ? (a) 13.21 (b) 6.29 (c) 13.31 (d) 13.41
  19. 19.6.27 + 3.1 = ? (a) 9.47 (b) 9.27 (c) 9.37 (d) 6.58
  20. 20.What is the value of the digit 7 in 34.879? (a) 0.7 (b) 0.07 (c) 0.007 (d) 7
  21. 21.5.05 + 2.4 = ? (a) 7.55 (b) 5.29 (c) 7.45 (d) 7.35
  22. 22.Which is the smallest: 0.46, 0.352, 0.035, 0.4? (a) 0.46 (b) 0.352 (c) 0.035 (d) 0.4
  23. 23.What is the value of the digit 5 in 89.456? (a) 0.5 (b) 0.05 (c) 0.005 (d) 5
  24. 24.Which is the greatest: 0.32, 0.231, 0.069, 0.3? (a) 0.32 (b) 0.231 (c) 0.069 (d) 0.3
  25. 25.Which is the greatest: 0.39, 0.3, 0.238, 0.072? (a) 0.39 (b) 0.3 (c) 0.238 (d) 0.072
  26. 26.Which is the greatest: 0.073, 0.27, 0.169, 0.2? (a) 0.073 (b) 0.27 (c) 0.169 (d) 0.2
  27. 27.What is the value of the digit 8 in 21.538? (a) 0.008 (b) 0.8 (c) 0.08 (d) 8
  28. 28.2.24 + 1.1 = ? (a) 3.24 (b) 2.35 (c) 3.34 (d) 3.44
  29. 29.What is the value of the digit 4 in 42.759? (a) 4 (b) 40 (c) 0.04 (d) 0.4
  30. 30.9.66 + 9.3 = ? (a) 18.86 (b) 19.06 (c) 18.96 (d) 10.59
  31. 31.What is the value of the digit 1 in 71.934? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  32. 32.8.27 + 8.1 = ? (a) 16.27 (b) 9.08 (c) 16.47 (d) 16.37
  33. 33.What is the value of the digit 9 in 57.912? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009
  34. 34.3.76 + 3.2 = ? (a) 7.06 (b) 4.08 (c) 6.96 (d) 6.86
  35. 35.3.58 + 2.2 = ? (a) 5.68 (b) 3.8 (c) 5.88 (d) 5.78
  36. 36.What is the value of the digit 2 in 23.481? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  37. 37.Which is the smallest: 0.021, 0.8, 0.722, 0.87? (a) 0.021 (b) 0.8 (c) 0.722 (d) 0.87
  38. 38.3.54 + 4.7 = ? (a) 8.34 (b) 4.01 (c) 8.24 (d) 8.14
  39. 39.9.48 + 2.9 = ? (a) 9.77 (b) 12.48 (c) 12.28 (d) 12.38
  40. 40.8.59 + 8.3 = ? (a) 16.89 (b) 16.79 (c) 9.42 (d) 16.99

Answer key

  1. 0.86
  2. 18.31
  3. 16.81
  4. 1
  5. 11.13
  6. 70
  7. 0.037
  8. 20
  9. 0.007
  10. 4.21
  11. 9.86
  12. 10.76
  13. 10.31
  14. 6.69
  15. 0.074
  16. 17.31
  17. 90
  18. 13.31
  19. 9.37
  20. 0.07
  21. 7.45
  22. 0.035
  23. 0.05
  24. 0.32
  25. 0.39
  26. 0.27
  27. 0.008
  28. 3.34
  29. 40
  30. 18.96
  31. 1
  32. 16.37
  33. 0.9
  34. 6.96
  35. 5.78
  36. 20
  37. 0.021
  38. 8.24
  39. 12.38
  40. 16.89

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