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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 111 · 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.What is the value of the digit 7 in 84.275? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  2. 2.8.84 + 3.1 = ? (a) 12.04 (b) 11.84 (c) 9.15 (d) 11.94
  3. 3.What is the value of the digit 9 in 15.793? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  4. 4.Which is the greatest: 0.76, 0.633, 0.7, 0.064? (a) 0.76 (b) 0.633 (c) 0.7 (d) 0.064
  5. 5.What is the value of the digit 8 in 24.758? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  6. 6.What is the value of the digit 7 in 24.739? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  7. 7.What is the value of the digit 7 in 73.618? (a) 0.07 (b) 0.7 (c) 7 (d) 70
  8. 8.1.47 + 8.9 = ? (a) 10.47 (b) 2.36 (c) 10.27 (d) 10.37
  9. 9.Which is the smallest: 0.626, 0.71, 0.055, 0.7? (a) 0.626 (b) 0.71 (c) 0.055 (d) 0.7
  10. 10.7.91 + 4.9 = ? (a) 12.91 (b) 8.4 (c) 12.71 (d) 12.81
  11. 11.Which is the smallest: 0.749, 0.8, 0.072, 0.88? (a) 0.749 (b) 0.8 (c) 0.072 (d) 0.88
  12. 12.Which is the greatest: 0.32, 0.212, 0.075, 0.3? (a) 0.32 (b) 0.212 (c) 0.075 (d) 0.3
  13. 13.5.51 + 3.1 = ? (a) 8.51 (b) 8.61 (c) 5.82 (d) 8.71
  14. 14.8.35 + 7.1 = ? (a) 15.45 (b) 15.35 (c) 15.55 (d) 9.06
  15. 15.What is the value of the digit 7 in 71.425? (a) 0.07 (b) 70 (c) 0.7 (d) 7
  16. 16.What is the value of the digit 9 in 31.589? (a) 9 (b) 0.009 (c) 0.9 (d) 0.09
  17. 17.Which is the greatest: 0.511, 0.65, 0.065, 0.6? (a) 0.511 (b) 0.65 (c) 0.065 (d) 0.6
  18. 18.What is the value of the digit 8 in 68.921? (a) 0.08 (b) 0.8 (c) 8 (d) 80
  19. 19.What is the value of the digit 8 in 51.784? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  20. 20.What is the value of the digit 7 in 87.251? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  21. 21.Which is the greatest: 0.055, 0.2, 0.115, 0.24? (a) 0.055 (b) 0.2 (c) 0.115 (d) 0.24
  22. 22.6.59 + 2.1 = ? (a) 8.79 (b) 8.69 (c) 8.59 (d) 6.8
  23. 23.What is the value of the digit 7 in 98.573? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  24. 24.8.66 + 5.1 = ? (a) 13.66 (b) 13.76 (c) 9.17 (d) 13.86
  25. 25.Which is the smallest: 0.28, 0.019, 0.2, 0.153? (a) 0.28 (b) 0.019 (c) 0.2 (d) 0.153
  26. 26.Which is the smallest: 0.72, 0.7, 0.636, 0.025? (a) 0.72 (b) 0.7 (c) 0.636 (d) 0.025
  27. 27.Which is the greatest: 0.019, 0.6, 0.539, 0.64? (a) 0.019 (b) 0.6 (c) 0.539 (d) 0.64
  28. 28.7.78 + 3.1 = ? (a) 10.78 (b) 10.98 (c) 8.09 (d) 10.88
  29. 29.Which is the greatest: 0.3, 0.218, 0.32, 0.041? (a) 0.3 (b) 0.218 (c) 0.32 (d) 0.041
  30. 30.What is the value of the digit 8 in 85.376? (a) 80 (b) 0.08 (c) 0.8 (d) 8
  31. 31.What is the value of the digit 1 in 96.541? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  32. 32.What is the value of the digit 1 in 28.195? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  33. 33.Which is the greatest: 0.021, 0.85, 0.742, 0.8? (a) 0.021 (b) 0.85 (c) 0.742 (d) 0.8
  34. 34.9.88 + 4.6 = ? (a) 14.38 (b) 10.34 (c) 14.48 (d) 14.58
  35. 35.Which is the smallest: 0.23, 0.161, 0.2, 0.021? (a) 0.23 (b) 0.161 (c) 0.2 (d) 0.021
  36. 36.7.41 + 6.6 = ? (a) 14.01 (b) 8.07 (c) 14.11 (d) 13.91
  37. 37.What is the value of the digit 3 in 18.392? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  38. 38.What is the value of the digit 8 in 15.867? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  39. 39.7.94 + 1.3 = ? (a) 9.14 (b) 9.24 (c) 9.34 (d) 8.07
  40. 40.7.08 + 4.5 = ? (a) 11.68 (b) 11.48 (c) 7.53 (d) 11.58

Answer key

  1. 0.07
  2. 11.94
  3. 0.09
  4. 0.76
  5. 0.008
  6. 0.7
  7. 70
  8. 10.37
  9. 0.055
  10. 12.81
  11. 0.072
  12. 0.32
  13. 8.61
  14. 15.45
  15. 70
  16. 0.009
  17. 0.65
  18. 8
  19. 0.08
  20. 7
  21. 0.24
  22. 8.69
  23. 0.07
  24. 13.76
  25. 0.019
  26. 0.025
  27. 0.64
  28. 10.88
  29. 0.32
  30. 80
  31. 0.001
  32. 0.1
  33. 0.85
  34. 14.48
  35. 0.021
  36. 14.01
  37. 0.3
  38. 0.8
  39. 9.24
  40. 11.58

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