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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 310 · 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: 0.3, 0.014, 0.294, 0.34? (a) 0.3 (b) 0.014 (c) 0.294 (d) 0.34
  2. 2.6.14 + 5.8 = ? (a) 6.72 (b) 12.04 (c) 11.94 (d) 11.84
  3. 3.6.31 + 5.9 = ? (a) 12.21 (b) 6.9 (c) 12.31 (d) 12.11
  4. 4.5.87 + 2.1 = ? (a) 7.97 (b) 8.07 (c) 6.08 (d) 7.87
  5. 5.Which is the smallest: 0.623, 0.036, 0.77, 0.7? (a) 0.623 (b) 0.036 (c) 0.77 (d) 0.7
  6. 6.What is the value of the digit 7 in 57.643? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  7. 7.8.69 + 3.1 = ? (a) 9 (b) 11.69 (c) 11.79 (d) 11.89
  8. 8.6.95 + 8.9 = ? (a) 15.95 (b) 15.75 (c) 7.84 (d) 15.85
  9. 9.What is the value of the digit 2 in 63.952? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  10. 10.What is the value of the digit 8 in 83.942? (a) 8 (b) 0.8 (c) 80 (d) 0.08
  11. 11.3.93 + 3.5 = ? (a) 4.28 (b) 7.33 (c) 7.43 (d) 7.53
  12. 12.What is the value of the digit 8 in 98.765? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  13. 13.8.79 + 2.1 = ? (a) 10.99 (b) 9 (c) 10.79 (d) 10.89
  14. 14.5.39 + 8.8 = ? (a) 14.09 (b) 6.27 (c) 14.19 (d) 14.29
  15. 15.1.27 + 5.9 = ? (a) 7.27 (b) 1.86 (c) 7.07 (d) 7.17
  16. 16.What is the value of the digit 7 in 26.731? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  17. 17.6.71 + 7.4 = ? (a) 7.45 (b) 14.01 (c) 14.21 (d) 14.11
  18. 18.Which is the greatest: 0.61, 0.6, 0.017, 0.584? (a) 0.61 (b) 0.6 (c) 0.017 (d) 0.584
  19. 19.Which is the greatest: 0.33, 0.229, 0.3, 0.057? (a) 0.33 (b) 0.229 (c) 0.3 (d) 0.057
  20. 20.7.89 + 5.9 = ? (a) 8.48 (b) 13.69 (c) 13.89 (d) 13.79
  21. 21.What is the value of the digit 9 in 62.894? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  22. 22.1.34 + 2.1 = ? (a) 3.54 (b) 1.55 (c) 3.44 (d) 3.34
  23. 23.Which is the smallest: 0.263, 0.39, 0.3, 0.016? (a) 0.263 (b) 0.39 (c) 0.3 (d) 0.016
  24. 24.What is the value of the digit 3 in 37.128? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  25. 25.8.79 + 7.3 = ? (a) 16.19 (b) 15.99 (c) 9.52 (d) 16.09
  26. 26.What is the value of the digit 5 in 43.958? (a) 0.5 (b) 0.005 (c) 5 (d) 0.05
  27. 27.Which is the greatest: 0.044, 0.2, 0.117, 0.22? (a) 0.044 (b) 0.2 (c) 0.117 (d) 0.22
  28. 28.Which is the smallest: 0.45, 0.4, 0.098, 0.382? (a) 0.45 (b) 0.4 (c) 0.098 (d) 0.382
  29. 29.5.93 + 6.4 = ? (a) 12.33 (b) 12.43 (c) 6.57 (d) 12.23
  30. 30.Which is the smallest: 0.2, 0.21, 0.096, 0.143? (a) 0.2 (b) 0.21 (c) 0.096 (d) 0.143
  31. 31.What is the value of the digit 1 in 64.198? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  32. 32.5.46 + 3.1 = ? (a) 8.56 (b) 5.77 (c) 8.46 (d) 8.66
  33. 33.6.48 + 7.8 = ? (a) 14.18 (b) 14.38 (c) 7.26 (d) 14.28
  34. 34.Which is the greatest: 0.563, 0.097, 0.6, 0.67? (a) 0.563 (b) 0.097 (c) 0.6 (d) 0.67
  35. 35.7.54 + 8.4 = ? (a) 8.38 (b) 15.94 (c) 16.04 (d) 15.84
  36. 36.Which is the greatest: 0.017, 0.3, 0.277, 0.38? (a) 0.017 (b) 0.3 (c) 0.277 (d) 0.38
  37. 37.4.38 + 8.2 = ? (a) 5.2 (b) 12.58 (c) 12.48 (d) 12.68
  38. 38.Which is the greatest: 0.6, 0.043, 0.546, 0.61? (a) 0.6 (b) 0.043 (c) 0.546 (d) 0.61
  39. 39.What is the value of the digit 8 in 74.168? (a) 8 (b) 0.08 (c) 0.8 (d) 0.008
  40. 40.Which is the greatest: 0.3, 0.013, 0.223, 0.35? (a) 0.3 (b) 0.013 (c) 0.223 (d) 0.35

Answer key

  1. 0.34
  2. 11.94
  3. 12.21
  4. 7.97
  5. 0.036
  6. 7
  7. 11.79
  8. 15.85
  9. 0.002
  10. 80
  11. 7.43
  12. 8
  13. 10.89
  14. 14.19
  15. 7.17
  16. 0.7
  17. 14.11
  18. 0.61
  19. 0.33
  20. 13.79
  21. 0.09
  22. 3.44
  23. 0.016
  24. 30
  25. 16.09
  26. 0.05
  27. 0.22
  28. 0.098
  29. 12.33
  30. 0.096
  31. 0.1
  32. 8.56
  33. 14.28
  34. 0.67
  35. 15.94
  36. 0.38
  37. 12.58
  38. 0.61
  39. 0.008
  40. 0.35

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