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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 990 · 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. 1.8.95 + 3.5 = ? (a) 12.55 (b) 9.3 (c) 12.35 (d) 12.45
  2. 2.Which is the smallest: 0.5, 0.013, 0.52, 0.414? (a) 0.5 (b) 0.013 (c) 0.52 (d) 0.414
  3. 3.4.34 + 8.3 = ? (a) 12.74 (b) 12.64 (c) 5.17 (d) 12.54
  4. 4.Which is the greatest: 0.043, 0.152, 0.2, 0.21? (a) 0.043 (b) 0.152 (c) 0.2 (d) 0.21
  5. 5.What is the value of the digit 3 in 31.597? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  6. 6.Which is the greatest: 0.662, 0.7, 0.044, 0.74? (a) 0.662 (b) 0.7 (c) 0.044 (d) 0.74
  7. 7.What is the value of the digit 9 in 34.529? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  8. 8.What is the value of the digit 5 in 56.892? (a) 5 (b) 50 (c) 0.05 (d) 0.5
  9. 9.Which is the greatest: 0.7, 0.663, 0.032, 0.76? (a) 0.7 (b) 0.663 (c) 0.032 (d) 0.76
  10. 10.What is the value of the digit 3 in 34.976? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  11. 11.6.81 + 6.2 = ? (a) 7.43 (b) 13.11 (c) 13.01 (d) 12.91
  12. 12.Which is the greatest: 0.598, 0.69, 0.025, 0.6? (a) 0.598 (b) 0.69 (c) 0.025 (d) 0.6
  13. 13.7.45 + 2.6 = ? (a) 9.95 (b) 10.15 (c) 7.71 (d) 10.05
  14. 14.What is the value of the digit 5 in 43.152? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  15. 15.What is the value of the digit 3 in 38.165? (a) 0.03 (b) 30 (c) 3 (d) 0.3
  16. 16.Which is the smallest: 0.136, 0.28, 0.096, 0.2? (a) 0.136 (b) 0.28 (c) 0.096 (d) 0.2
  17. 17.Which is the smallest: 0.475, 0.52, 0.037, 0.5? (a) 0.475 (b) 0.52 (c) 0.037 (d) 0.5
  18. 18.Which is the greatest: 0.052, 0.81, 0.8, 0.766? (a) 0.052 (b) 0.81 (c) 0.8 (d) 0.766
  19. 19.What is the value of the digit 9 in 87.293? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  20. 20.5.05 + 3.2 = ? (a) 8.25 (b) 8.15 (c) 5.37 (d) 8.35
  21. 21.What is the value of the digit 8 in 71.986? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  22. 22.Which is the greatest: 0.076, 0.274, 0.31, 0.3? (a) 0.076 (b) 0.274 (c) 0.31 (d) 0.3
  23. 23.4.44 + 5.5 = ? (a) 4.99 (b) 10.04 (c) 9.84 (d) 9.94
  24. 24.What is the value of the digit 2 in 82.714? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  25. 25.8.76 + 1.8 = ? (a) 10.66 (b) 8.94 (c) 10.56 (d) 10.46
  26. 26.Which is the greatest: 0.632, 0.78, 0.7, 0.021? (a) 0.632 (b) 0.78 (c) 0.7 (d) 0.021
  27. 27.Which is the greatest: 0.51, 0.071, 0.5, 0.418? (a) 0.51 (b) 0.071 (c) 0.5 (d) 0.418
  28. 28.5.11 + 9.9 = ? (a) 15.11 (b) 14.91 (c) 15.01 (d) 6.1
  29. 29.4.44 + 9.2 = ? (a) 13.64 (b) 13.54 (c) 5.36 (d) 13.74
  30. 30.7.77 + 3.9 = ? (a) 11.77 (b) 11.67 (c) 11.57 (d) 8.16
  31. 31.4.75 + 2.7 = ? (a) 7.45 (b) 7.35 (c) 5.02 (d) 7.55
  32. 32.3.71 + 8.1 = ? (a) 11.71 (b) 11.91 (c) 11.81 (d) 4.52
  33. 33.5.13 + 7.3 = ? (a) 12.43 (b) 5.86 (c) 12.33 (d) 12.53
  34. 34.Which is the smallest: 0.45, 0.373, 0.4, 0.036? (a) 0.45 (b) 0.373 (c) 0.4 (d) 0.036
  35. 35.4.83 + 4.1 = ? (a) 8.93 (b) 8.83 (c) 5.24 (d) 9.03
  36. 36.8.44 + 4.7 = ? (a) 8.91 (b) 13.24 (c) 13.04 (d) 13.14
  37. 37.What is the value of the digit 4 in 61.524? (a) 0.004 (b) 4 (c) 0.04 (d) 0.4
  38. 38.8.09 + 1.6 = ? (a) 8.25 (b) 9.69 (c) 9.79 (d) 9.59
  39. 39.5.44 + 7.5 = ? (a) 13.04 (b) 12.94 (c) 12.84 (d) 6.19
  40. 40.Which is the greatest: 0.47, 0.097, 0.324, 0.4? (a) 0.47 (b) 0.097 (c) 0.324 (d) 0.4

Answer key

  1. 12.45
  2. 0.013
  3. 12.64
  4. 0.21
  5. 30
  6. 0.74
  7. 0.009
  8. 50
  9. 0.76
  10. 30
  11. 13.01
  12. 0.69
  13. 10.05
  14. 0.05
  15. 30
  16. 0.096
  17. 0.037
  18. 0.81
  19. 0.09
  20. 8.25
  21. 0.08
  22. 0.31
  23. 9.94
  24. 2
  25. 10.56
  26. 0.78
  27. 0.51
  28. 15.01
  29. 13.64
  30. 11.67
  31. 7.45
  32. 11.81
  33. 12.43
  34. 0.036
  35. 8.93
  36. 13.14
  37. 0.004
  38. 9.69
  39. 12.94
  40. 0.47

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