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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 375 · 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. 1.1.58 + 2.2 = ? (a) 1.8 (b) 3.68 (c) 3.78 (d) 3.88
  2. 2.Which is the greatest: 0.044, 0.76, 0.7, 0.659? (a) 0.044 (b) 0.76 (c) 0.7 (d) 0.659
  3. 3.What is the value of the digit 4 in 63.947? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  4. 4.What is the value of the digit 9 in 92.374? (a) 0.09 (b) 0.9 (c) 90 (d) 9
  5. 5.What is the value of the digit 9 in 94.268? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  6. 6.What is the value of the digit 4 in 32.418? (a) 0.004 (b) 4 (c) 0.4 (d) 0.04
  7. 7.What is the value of the digit 6 in 43.816? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  8. 8.2.21 + 7.8 = ? (a) 2.99 (b) 10.11 (c) 10.01 (d) 9.91
  9. 9.Which is the smallest: 0.093, 0.2, 0.24, 0.148? (a) 0.093 (b) 0.2 (c) 0.24 (d) 0.148
  10. 10.What is the value of the digit 5 in 51.678? (a) 0.05 (b) 5 (c) 0.5 (d) 50
  11. 11.What is the value of the digit 4 in 72.964? (a) 0.04 (b) 0.004 (c) 4 (d) 0.4
  12. 12.Which is the greatest: 0.68, 0.525, 0.095, 0.6? (a) 0.68 (b) 0.525 (c) 0.095 (d) 0.6
  13. 13.7.81 + 7.5 = ? (a) 8.56 (b) 15.31 (c) 15.21 (d) 15.41
  14. 14.Which is the smallest: 0.047, 0.4, 0.373, 0.41? (a) 0.047 (b) 0.4 (c) 0.373 (d) 0.41
  15. 15.1.48 + 9.1 = ? (a) 10.48 (b) 10.68 (c) 2.39 (d) 10.58
  16. 16.2.16 + 8.2 = ? (a) 2.98 (b) 10.46 (c) 10.36 (d) 10.26
  17. 17.2.65 + 3.7 = ? (a) 6.45 (b) 6.25 (c) 6.35 (d) 3.02
  18. 18.Which is the greatest: 0.2, 0.171, 0.23, 0.094? (a) 0.2 (b) 0.171 (c) 0.23 (d) 0.094
  19. 19.6.24 + 8.5 = ? (a) 7.09 (b) 14.64 (c) 14.74 (d) 14.84
  20. 20.9.94 + 5.9 = ? (a) 10.53 (b) 15.84 (c) 15.74 (d) 15.94
  21. 21.3.25 + 9.1 = ? (a) 12.35 (b) 12.45 (c) 4.16 (d) 12.25
  22. 22.9.21 + 2.4 = ? (a) 11.71 (b) 9.45 (c) 11.51 (d) 11.61
  23. 23.2.63 + 9.1 = ? (a) 11.83 (b) 11.73 (c) 3.54 (d) 11.63
  24. 24.9.25 + 5.6 = ? (a) 14.85 (b) 14.95 (c) 14.75 (d) 9.81
  25. 25.What is the value of the digit 3 in 32.619? (a) 30 (b) 0.3 (c) 0.03 (d) 3
  26. 26.Which is the greatest: 0.019, 0.394, 0.47, 0.4? (a) 0.019 (b) 0.394 (c) 0.47 (d) 0.4
  27. 27.9.33 + 3.5 = ? (a) 12.93 (b) 9.68 (c) 12.83 (d) 12.73
  28. 28.What is the value of the digit 2 in 21.673? (a) 2 (b) 20 (c) 0.02 (d) 0.2
  29. 29.5.82 + 1.5 = ? (a) 7.32 (b) 5.97 (c) 7.42 (d) 7.22
  30. 30.Which is the greatest: 0.033, 0.4, 0.42, 0.345? (a) 0.033 (b) 0.4 (c) 0.42 (d) 0.345
  31. 31.3.83 + 2.8 = ? (a) 4.11 (b) 6.53 (c) 6.63 (d) 6.73
  32. 32.3.41 + 2.3 = ? (a) 3.64 (b) 5.81 (c) 5.61 (d) 5.71
  33. 33.Which is the greatest: 0.26, 0.2, 0.132, 0.037? (a) 0.26 (b) 0.2 (c) 0.132 (d) 0.037
  34. 34.8.54 + 6.1 = ? (a) 9.15 (b) 14.54 (c) 14.74 (d) 14.64
  35. 35.Which is the greatest: 0.74, 0.036, 0.676, 0.7? (a) 0.74 (b) 0.036 (c) 0.676 (d) 0.7
  36. 36.7.84 + 1.5 = ? (a) 9.44 (b) 9.34 (c) 9.24 (d) 7.99
  37. 37.4.66 + 8.9 = ? (a) 13.46 (b) 13.66 (c) 13.56 (d) 5.55
  38. 38.2.81 + 1.8 = ? (a) 4.51 (b) 4.71 (c) 2.99 (d) 4.61
  39. 39.3.68 + 7.5 = ? (a) 11.28 (b) 4.43 (c) 11.08 (d) 11.18
  40. 40.What is the value of the digit 1 in 15.368? (a) 0.1 (b) 0.01 (c) 1 (d) 10

Answer key

  1. 3.78
  2. 0.76
  3. 0.04
  4. 90
  5. 90
  6. 0.4
  7. 0.006
  8. 10.01
  9. 0.093
  10. 50
  11. 0.004
  12. 0.68
  13. 15.31
  14. 0.047
  15. 10.58
  16. 10.36
  17. 6.35
  18. 0.23
  19. 14.74
  20. 15.84
  21. 12.35
  22. 11.61
  23. 11.73
  24. 14.85
  25. 30
  26. 0.47
  27. 12.83
  28. 20
  29. 7.32
  30. 0.42
  31. 6.63
  32. 5.71
  33. 0.26
  34. 14.64
  35. 0.74
  36. 9.34
  37. 13.56
  38. 4.61
  39. 11.18
  40. 10

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