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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 595 · 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. 1.7.66 + 4.9 = ? (a) 12.56 (b) 12.66 (c) 12.46 (d) 8.15
  2. 2.What is the value of the digit 2 in 29.417? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  3. 3.Which is the smallest: 0.072, 0.179, 0.25, 0.2? (a) 0.072 (b) 0.179 (c) 0.25 (d) 0.2
  4. 4.2.23 + 5.8 = ? (a) 7.93 (b) 8.13 (c) 8.03 (d) 2.81
  5. 5.What is the value of the digit 2 in 27.946? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  6. 6.1.29 + 4.8 = ? (a) 5.99 (b) 1.77 (c) 6.09 (d) 6.19
  7. 7.What is the value of the digit 6 in 31.267? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  8. 8.Which is the greatest: 0.72, 0.077, 0.7, 0.678? (a) 0.72 (b) 0.077 (c) 0.7 (d) 0.678
  9. 9.What is the value of the digit 8 in 46.138? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  10. 10.What is the value of the digit 9 in 62.149? (a) 0.9 (b) 0.09 (c) 9 (d) 0.009
  11. 11.What is the value of the digit 9 in 14.689? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  12. 12.What is the value of the digit 3 in 25.381? (a) 0.03 (b) 0.003 (c) 0.3 (d) 3
  13. 13.Which is the smallest: 0.5, 0.486, 0.58, 0.021? (a) 0.5 (b) 0.486 (c) 0.58 (d) 0.021
  14. 14.2.68 + 5.1 = ? (a) 7.78 (b) 3.19 (c) 7.88 (d) 7.68
  15. 15.What is the value of the digit 8 in 86.714? (a) 0.8 (b) 8 (c) 0.08 (d) 80
  16. 16.What is the value of the digit 6 in 24.316? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  17. 17.1.26 + 5.7 = ? (a) 6.86 (b) 1.83 (c) 6.96 (d) 7.06
  18. 18.5.77 + 5.8 = ? (a) 11.67 (b) 6.35 (c) 11.47 (d) 11.57
  19. 19.What is the value of the digit 2 in 29.873? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  20. 20.Which is the smallest: 0.7, 0.018, 0.669, 0.75? (a) 0.7 (b) 0.018 (c) 0.669 (d) 0.75
  21. 21.What is the value of the digit 6 in 61.539? (a) 6 (b) 60 (c) 0.6 (d) 0.06
  22. 22.What is the value of the digit 5 in 45.281? (a) 50 (b) 0.5 (c) 5 (d) 0.05
  23. 23.2.61 + 7.3 = ? (a) 10.01 (b) 3.34 (c) 9.91 (d) 9.81
  24. 24.What is the value of the digit 9 in 28.914? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009
  25. 25.5.14 + 9.7 = ? (a) 14.94 (b) 6.11 (c) 14.74 (d) 14.84
  26. 26.Which is the greatest: 0.011, 0.2, 0.29, 0.124? (a) 0.011 (b) 0.2 (c) 0.29 (d) 0.124
  27. 27.Which is the smallest: 0.435, 0.53, 0.5, 0.051? (a) 0.435 (b) 0.53 (c) 0.5 (d) 0.051
  28. 28.6.45 + 7.7 = ? (a) 14.15 (b) 14.25 (c) 14.05 (d) 7.22
  29. 29.What is the value of the digit 3 in 78.931? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  30. 30.5.88 + 8.3 = ? (a) 14.08 (b) 6.71 (c) 14.18 (d) 14.28
  31. 31.What is the value of the digit 8 in 29.678? (a) 0.08 (b) 0.008 (c) 0.8 (d) 8
  32. 32.Which is the smallest: 0.49, 0.067, 0.392, 0.4? (a) 0.49 (b) 0.067 (c) 0.392 (d) 0.4
  33. 33.Which is the smallest: 0.365, 0.081, 0.4, 0.49? (a) 0.365 (b) 0.081 (c) 0.4 (d) 0.49
  34. 34.Which is the greatest: 0.684, 0.73, 0.7, 0.049? (a) 0.684 (b) 0.73 (c) 0.7 (d) 0.049
  35. 35.What is the value of the digit 1 in 23.415? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  36. 36.Which is the smallest: 0.3, 0.298, 0.39, 0.087? (a) 0.3 (b) 0.298 (c) 0.39 (d) 0.087
  37. 37.Which is the greatest: 0.243, 0.38, 0.036, 0.3? (a) 0.243 (b) 0.38 (c) 0.036 (d) 0.3
  38. 38.5.02 + 5.4 = ? (a) 10.52 (b) 10.32 (c) 10.42 (d) 5.56
  39. 39.Which is the smallest: 0.272, 0.37, 0.3, 0.043? (a) 0.272 (b) 0.37 (c) 0.3 (d) 0.043
  40. 40.What is the value of the digit 8 in 48.921? (a) 0.08 (b) 80 (c) 0.8 (d) 8

Answer key

  1. 12.56
  2. 20
  3. 0.072
  4. 8.03
  5. 20
  6. 6.09
  7. 0.06
  8. 0.72
  9. 0.008
  10. 0.009
  11. 0.009
  12. 0.3
  13. 0.021
  14. 7.78
  15. 80
  16. 0.006
  17. 6.96
  18. 11.57
  19. 20
  20. 0.018
  21. 60
  22. 5
  23. 9.91
  24. 0.9
  25. 14.84
  26. 0.29
  27. 0.051
  28. 14.15
  29. 0.03
  30. 14.18
  31. 0.008
  32. 0.067
  33. 0.081
  34. 0.73
  35. 0.01
  36. 0.087
  37. 0.38
  38. 10.42
  39. 0.043
  40. 8

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