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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 312 · 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. 1.1.91 + 8.6 = ? (a) 10.41 (b) 10.51 (c) 2.77 (d) 10.61
  2. 2.Which is the greatest: 0.28, 0.157, 0.2, 0.022? (a) 0.28 (b) 0.157 (c) 0.2 (d) 0.022
  3. 3.Which is the greatest: 0.495, 0.56, 0.048, 0.5? (a) 0.495 (b) 0.56 (c) 0.048 (d) 0.5
  4. 4.What is the value of the digit 9 in 13.976? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  5. 5.6.11 + 4.6 = ? (a) 10.61 (b) 10.71 (c) 6.57 (d) 10.81
  6. 6.What is the value of the digit 6 in 21.768? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  7. 7.What is the value of the digit 3 in 13.495? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  8. 8.What is the value of the digit 6 in 96.174? (a) 0.06 (b) 6 (c) 0.6 (d) 60
  9. 9.What is the value of the digit 7 in 42.317? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  10. 10.Which is the greatest: 0.3, 0.091, 0.284, 0.35? (a) 0.3 (b) 0.091 (c) 0.284 (d) 0.35
  11. 11.What is the value of the digit 3 in 32.419? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  12. 12.Which is the smallest: 0.84, 0.8, 0.038, 0.765? (a) 0.84 (b) 0.8 (c) 0.038 (d) 0.765
  13. 13.2.66 + 2.2 = ? (a) 4.86 (b) 2.88 (c) 4.76 (d) 4.96
  14. 14.What is the value of the digit 7 in 78.152? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  15. 15.4.82 + 9.3 = ? (a) 5.75 (b) 14.12 (c) 14.22 (d) 14.02
  16. 16.Which is the smallest: 0.613, 0.016, 0.72, 0.7? (a) 0.613 (b) 0.016 (c) 0.72 (d) 0.7
  17. 17.What is the value of the digit 4 in 84.632? (a) 0.4 (b) 4 (c) 40 (d) 0.04
  18. 18.What is the value of the digit 1 in 98.173? (a) 0.001 (b) 0.1 (c) 0.01 (d) 1
  19. 19.What is the value of the digit 9 in 59.831? (a) 0.9 (b) 9 (c) 0.09 (d) 90
  20. 20.3.64 + 5.3 = ? (a) 8.84 (b) 4.17 (c) 9.04 (d) 8.94
  21. 21.1.91 + 5.1 = ? (a) 7.11 (b) 6.91 (c) 7.01 (d) 2.42
  22. 22.Which is the greatest: 0.25, 0.066, 0.2, 0.123? (a) 0.25 (b) 0.066 (c) 0.2 (d) 0.123
  23. 23.Which is the greatest: 0.045, 0.436, 0.5, 0.56? (a) 0.045 (b) 0.436 (c) 0.5 (d) 0.56
  24. 24.1.23 + 1.6 = ? (a) 2.93 (b) 2.73 (c) 2.83 (d) 1.39
  25. 25.5.86 + 1.3 = ? (a) 7.26 (b) 7.16 (c) 7.06 (d) 5.99
  26. 26.What is the value of the digit 8 in 74.586? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  27. 27.1.21 + 4.8 = ? (a) 1.69 (b) 5.91 (c) 6.11 (d) 6.01
  28. 28.What is the value of the digit 9 in 89.614? (a) 0.09 (b) 9 (c) 90 (d) 0.9
  29. 29.Which is the greatest: 0.034, 0.136, 0.2, 0.28? (a) 0.034 (b) 0.136 (c) 0.2 (d) 0.28
  30. 30.Which is the greatest: 0.096, 0.282, 0.3, 0.36? (a) 0.096 (b) 0.282 (c) 0.3 (d) 0.36
  31. 31.What is the value of the digit 6 in 64.529? (a) 6 (b) 0.06 (c) 0.6 (d) 60
  32. 32.What is the value of the digit 2 in 26.374? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  33. 33.7.39 + 3.3 = ? (a) 10.69 (b) 10.79 (c) 10.59 (d) 7.72
  34. 34.What is the value of the digit 1 in 37.841? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  35. 35.What is the value of the digit 3 in 19.834? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  36. 36.Which is the greatest: 0.022, 0.3, 0.39, 0.214? (a) 0.022 (b) 0.3 (c) 0.39 (d) 0.214
  37. 37.4.17 + 5.6 = ? (a) 9.87 (b) 4.73 (c) 9.67 (d) 9.77
  38. 38.What is the value of the digit 8 in 83.942? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  39. 39.What is the value of the digit 1 in 34.521? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  40. 40.9.52 + 5.7 = ? (a) 10.09 (b) 15.22 (c) 15.12 (d) 15.32

Answer key

  1. 10.51
  2. 0.28
  3. 0.56
  4. 0.9
  5. 10.71
  6. 0.06
  7. 3
  8. 6
  9. 0.007
  10. 0.35
  11. 30
  12. 0.038
  13. 4.86
  14. 70
  15. 14.12
  16. 0.016
  17. 4
  18. 0.1
  19. 9
  20. 8.94
  21. 7.01
  22. 0.25
  23. 0.56
  24. 2.83
  25. 7.16
  26. 0.08
  27. 6.01
  28. 9
  29. 0.28
  30. 0.36
  31. 60
  32. 20
  33. 10.69
  34. 0.001
  35. 0.03
  36. 0.39
  37. 9.77
  38. 80
  39. 0.001
  40. 15.22

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