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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 91 · 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. 1.7.73 + 9.9 = ? (a) 17.53 (b) 17.73 (c) 17.63 (d) 8.72
  2. 2.Which is the smallest: 0.7, 0.71, 0.078, 0.657? (a) 0.7 (b) 0.71 (c) 0.078 (d) 0.657
  3. 3.Which is the smallest: 0.36, 0.3, 0.236, 0.083? (a) 0.36 (b) 0.3 (c) 0.236 (d) 0.083
  4. 4.What is the value of the digit 1 in 12.489? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  5. 5.3.81 + 1.1 = ? (a) 3.92 (b) 4.81 (c) 5.01 (d) 4.91
  6. 6.What is the value of the digit 1 in 31.527? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  7. 7.Which is the smallest: 0.335, 0.014, 0.44, 0.4? (a) 0.335 (b) 0.014 (c) 0.44 (d) 0.4
  8. 8.Which is the greatest: 0.095, 0.8, 0.783, 0.89? (a) 0.095 (b) 0.8 (c) 0.783 (d) 0.89
  9. 9.What is the value of the digit 5 in 97.528? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  10. 10.What is the value of the digit 8 in 83.725? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  11. 11.Which is the smallest: 0.31, 0.3, 0.258, 0.022? (a) 0.31 (b) 0.3 (c) 0.258 (d) 0.022
  12. 12.What is the value of the digit 1 in 31.862? (a) 10 (b) 0.01 (c) 1 (d) 0.1
  13. 13.5.71 + 2.9 = ? (a) 6 (b) 8.51 (c) 8.61 (d) 8.71
  14. 14.What is the value of the digit 1 in 83.215? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  15. 15.What is the value of the digit 8 in 28.179? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  16. 16.Which is the smallest: 0.3, 0.231, 0.38, 0.082? (a) 0.3 (b) 0.231 (c) 0.38 (d) 0.082
  17. 17.What is the value of the digit 7 in 75.148? (a) 0.07 (b) 70 (c) 7 (d) 0.7
  18. 18.5.28 + 3.5 = ? (a) 8.88 (b) 5.63 (c) 8.78 (d) 8.68
  19. 19.Which is the smallest: 0.434, 0.53, 0.5, 0.023? (a) 0.434 (b) 0.53 (c) 0.5 (d) 0.023
  20. 20.Which is the greatest: 0.484, 0.5, 0.54, 0.019? (a) 0.484 (b) 0.5 (c) 0.54 (d) 0.019
  21. 21.3.21 + 2.7 = ? (a) 5.91 (b) 3.48 (c) 5.81 (d) 6.01
  22. 22.What is the value of the digit 1 in 93.816? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  23. 23.What is the value of the digit 9 in 89.132? (a) 0.09 (b) 0.9 (c) 9 (d) 90
  24. 24.9.99 + 6.8 = ? (a) 10.67 (b) 16.69 (c) 16.89 (d) 16.79
  25. 25.Which is the greatest: 0.62, 0.6, 0.046, 0.546? (a) 0.62 (b) 0.6 (c) 0.046 (d) 0.546
  26. 26.8.69 + 4.2 = ? (a) 12.89 (b) 12.79 (c) 9.11 (d) 12.99
  27. 27.What is the value of the digit 7 in 25.374? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  28. 28.Which is the greatest: 0.27, 0.062, 0.131, 0.2? (a) 0.27 (b) 0.062 (c) 0.131 (d) 0.2
  29. 29.Which is the greatest: 0.063, 0.59, 0.432, 0.5? (a) 0.063 (b) 0.59 (c) 0.432 (d) 0.5
  30. 30.What is the value of the digit 3 in 15.823? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  31. 31.What is the value of the digit 7 in 17.243? (a) 0.07 (b) 70 (c) 7 (d) 0.7
  32. 32.1.68 + 4.9 = ? (a) 2.17 (b) 6.68 (c) 6.58 (d) 6.48
  33. 33.6.23 + 7.1 = ? (a) 13.33 (b) 13.43 (c) 6.94 (d) 13.23
  34. 34.What is the value of the digit 1 in 29.134? (a) 0.001 (b) 0.1 (c) 0.01 (d) 1
  35. 35.Which is the smallest: 0.32, 0.244, 0.3, 0.063? (a) 0.32 (b) 0.244 (c) 0.3 (d) 0.063
  36. 36.Which is the greatest: 0.35, 0.271, 0.035, 0.3? (a) 0.35 (b) 0.271 (c) 0.035 (d) 0.3
  37. 37.6.01 + 2.9 = ? (a) 8.81 (b) 9.01 (c) 6.3 (d) 8.91
  38. 38.5.57 + 5.6 = ? (a) 11.27 (b) 6.13 (c) 11.07 (d) 11.17
  39. 39.2.17 + 9.2 = ? (a) 11.37 (b) 11.27 (c) 3.09 (d) 11.47
  40. 40.3.02 + 1.3 = ? (a) 4.22 (b) 3.15 (c) 4.42 (d) 4.32

Answer key

  1. 17.63
  2. 0.078
  3. 0.083
  4. 10
  5. 4.91
  6. 1
  7. 0.014
  8. 0.89
  9. 0.5
  10. 80
  11. 0.022
  12. 1
  13. 8.61
  14. 0.01
  15. 8
  16. 0.082
  17. 70
  18. 8.78
  19. 0.023
  20. 0.54
  21. 5.91
  22. 0.01
  23. 9
  24. 16.79
  25. 0.62
  26. 12.89
  27. 0.07
  28. 0.27
  29. 0.59
  30. 0.003
  31. 7
  32. 6.58
  33. 13.33
  34. 0.1
  35. 0.063
  36. 0.35
  37. 8.91
  38. 11.17
  39. 11.37
  40. 4.32

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