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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 316 · 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 2 in 49.723? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  2. 2.1.93 + 3.8 = ? (a) 5.83 (b) 5.63 (c) 5.73 (d) 2.31
  3. 3.What is the value of the digit 7 in 37.198? (a) 7 (b) 70 (c) 0.7 (d) 0.07
  4. 4.What is the value of the digit 3 in 72.153? (a) 0.03 (b) 3 (c) 0.3 (d) 0.003
  5. 5.Which is the greatest: 0.29, 0.051, 0.142, 0.2? (a) 0.29 (b) 0.051 (c) 0.142 (d) 0.2
  6. 6.Which is the smallest: 0.5, 0.461, 0.087, 0.57? (a) 0.5 (b) 0.461 (c) 0.087 (d) 0.57
  7. 7.8.69 + 4.4 = ? (a) 12.99 (b) 9.13 (c) 13.09 (d) 13.19
  8. 8.Which is the smallest: 0.581, 0.6, 0.62, 0.073? (a) 0.581 (b) 0.6 (c) 0.62 (d) 0.073
  9. 9.What is the value of the digit 7 in 74.896? (a) 7 (b) 70 (c) 0.07 (d) 0.7
  10. 10.2.01 + 2.9 = ? (a) 5.01 (b) 2.3 (c) 4.91 (d) 4.81
  11. 11.7.73 + 1.8 = ? (a) 9.63 (b) 7.91 (c) 9.53 (d) 9.43
  12. 12.9.91 + 1.3 = ? (a) 10.04 (b) 11.31 (c) 11.21 (d) 11.11
  13. 13.Which is the smallest: 0.5, 0.55, 0.445, 0.073? (a) 0.5 (b) 0.55 (c) 0.445 (d) 0.073
  14. 14.Which is the smallest: 0.599, 0.065, 0.6, 0.61? (a) 0.599 (b) 0.065 (c) 0.6 (d) 0.61
  15. 15.8.12 + 5.3 = ? (a) 13.42 (b) 8.65 (c) 13.32 (d) 13.52
  16. 16.Which is the greatest: 0.071, 0.315, 0.4, 0.46? (a) 0.071 (b) 0.315 (c) 0.4 (d) 0.46
  17. 17.Which is the greatest: 0.58, 0.5, 0.081, 0.417? (a) 0.58 (b) 0.5 (c) 0.081 (d) 0.417
  18. 18.Which is the smallest: 0.43, 0.064, 0.4, 0.392? (a) 0.43 (b) 0.064 (c) 0.4 (d) 0.392
  19. 19.2.02 + 2.2 = ? (a) 2.24 (b) 4.32 (c) 4.22 (d) 4.12
  20. 20.What is the value of the digit 5 in 42.581? (a) 0.05 (b) 5 (c) 0.005 (d) 0.5
  21. 21.What is the value of the digit 3 in 31.792? (a) 3 (b) 0.03 (c) 30 (d) 0.3
  22. 22.Which is the smallest: 0.046, 0.517, 0.6, 0.65? (a) 0.046 (b) 0.517 (c) 0.6 (d) 0.65
  23. 23.What is the value of the digit 6 in 34.761? (a) 0.6 (b) 6 (c) 0.06 (d) 0.006
  24. 24.9.96 + 7.2 = ? (a) 17.16 (b) 10.68 (c) 17.26 (d) 17.06
  25. 25.7.62 + 3.7 = ? (a) 11.42 (b) 7.99 (c) 11.22 (d) 11.32
  26. 26.Which is the greatest: 0.7, 0.077, 0.661, 0.79? (a) 0.7 (b) 0.077 (c) 0.661 (d) 0.79
  27. 27.Which is the smallest: 0.5, 0.56, 0.467, 0.085? (a) 0.5 (b) 0.56 (c) 0.467 (d) 0.085
  28. 28.8.38 + 7.7 = ? (a) 16.08 (b) 9.15 (c) 15.98 (d) 16.18
  29. 29.3.09 + 2.6 = ? (a) 3.35 (b) 5.79 (c) 5.59 (d) 5.69
  30. 30.Which is the smallest: 0.54, 0.5, 0.465, 0.054? (a) 0.54 (b) 0.5 (c) 0.465 (d) 0.054
  31. 31.What is the value of the digit 3 in 41.326? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  32. 32.What is the value of the digit 2 in 68.129? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  33. 33.7.95 + 9.1 = ? (a) 17.15 (b) 17.05 (c) 16.95 (d) 8.86
  34. 34.Which is the smallest: 0.57, 0.453, 0.5, 0.013? (a) 0.57 (b) 0.453 (c) 0.5 (d) 0.013
  35. 35.Which is the smallest: 0.6, 0.573, 0.62, 0.086? (a) 0.6 (b) 0.573 (c) 0.62 (d) 0.086
  36. 36.2.54 + 1.1 = ? (a) 3.74 (b) 3.64 (c) 2.65 (d) 3.54
  37. 37.7.83 + 2.9 = ? (a) 10.83 (b) 8.12 (c) 10.63 (d) 10.73
  38. 38.5.01 + 9.1 = ? (a) 5.92 (b) 14.21 (c) 14.11 (d) 14.01
  39. 39.What is the value of the digit 2 in 51.372? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  40. 40.5.08 + 1.2 = ? (a) 6.38 (b) 6.18 (c) 5.2 (d) 6.28

Answer key

  1. 0.02
  2. 5.73
  3. 7
  4. 0.003
  5. 0.29
  6. 0.087
  7. 13.09
  8. 0.073
  9. 70
  10. 4.91
  11. 9.53
  12. 11.21
  13. 0.073
  14. 0.065
  15. 13.42
  16. 0.46
  17. 0.58
  18. 0.064
  19. 4.22
  20. 0.5
  21. 30
  22. 0.046
  23. 0.06
  24. 17.16
  25. 11.32
  26. 0.79
  27. 0.085
  28. 16.08
  29. 5.69
  30. 0.054
  31. 0.3
  32. 0.02
  33. 17.05
  34. 0.013
  35. 0.086
  36. 3.64
  37. 10.73
  38. 14.11
  39. 0.002
  40. 6.28

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