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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 475 · 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: 0.097, 0.72, 0.7, 0.679? (a) 0.097 (b) 0.72 (c) 0.7 (d) 0.679
  2. 2.6.79 + 8.4 = ? (a) 15.19 (b) 15.29 (c) 7.63 (d) 15.09
  3. 3.What is the value of the digit 5 in 24.735? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  4. 4.1.35 + 1.9 = ? (a) 1.54 (b) 3.15 (c) 3.35 (d) 3.25
  5. 5.7.46 + 3.4 = ? (a) 10.96 (b) 10.76 (c) 7.8 (d) 10.86
  6. 6.What is the value of the digit 3 in 92.375? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  7. 7.What is the value of the digit 3 in 35.429? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  8. 8.Which is the smallest: 0.84, 0.8, 0.017, 0.768? (a) 0.84 (b) 0.8 (c) 0.017 (d) 0.768
  9. 9.5.28 + 3.4 = ? (a) 8.58 (b) 8.78 (c) 8.68 (d) 5.62
  10. 10.What is the value of the digit 7 in 35.714? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  11. 11.What is the value of the digit 7 in 18.297? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  12. 12.6.91 + 2.2 = ? (a) 7.13 (b) 9.11 (c) 9.01 (d) 9.21
  13. 13.What is the value of the digit 4 in 64.281? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  14. 14.7.03 + 2.1 = ? (a) 7.24 (b) 9.13 (c) 9.23 (d) 9.03
  15. 15.7.11 + 4.1 = ? (a) 11.31 (b) 11.21 (c) 7.52 (d) 11.11
  16. 16.Which is the greatest: 0.064, 0.39, 0.276, 0.3? (a) 0.064 (b) 0.39 (c) 0.276 (d) 0.3
  17. 17.What is the value of the digit 1 in 31.728? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  18. 18.Which is the smallest: 0.167, 0.073, 0.25, 0.2? (a) 0.167 (b) 0.073 (c) 0.25 (d) 0.2
  19. 19.Which is the greatest: 0.8, 0.096, 0.89, 0.773? (a) 0.8 (b) 0.096 (c) 0.89 (d) 0.773
  20. 20.Which is the greatest: 0.61, 0.023, 0.542, 0.6? (a) 0.61 (b) 0.023 (c) 0.542 (d) 0.6
  21. 21.5.33 + 1.8 = ? (a) 7.13 (b) 7.03 (c) 5.51 (d) 7.23
  22. 22.What is the value of the digit 1 in 57.183? (a) 0.001 (b) 0.1 (c) 0.01 (d) 1
  23. 23.Which is the smallest: 0.2, 0.017, 0.144, 0.24? (a) 0.2 (b) 0.017 (c) 0.144 (d) 0.24
  24. 24.3.38 + 2.6 = ? (a) 5.88 (b) 5.98 (c) 6.08 (d) 3.64
  25. 25.Which is the greatest: 0.523, 0.6, 0.64, 0.042? (a) 0.523 (b) 0.6 (c) 0.64 (d) 0.042
  26. 26.Which is the smallest: 0.095, 0.489, 0.55, 0.5? (a) 0.095 (b) 0.489 (c) 0.55 (d) 0.5
  27. 27.3.34 + 8.8 = ? (a) 12.04 (b) 12.24 (c) 12.14 (d) 4.22
  28. 28.What is the value of the digit 5 in 65.924? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  29. 29.7.21 + 7.4 = ? (a) 14.61 (b) 14.71 (c) 14.51 (d) 7.95
  30. 30.7.95 + 2.3 = ? (a) 8.18 (b) 10.35 (c) 10.15 (d) 10.25
  31. 31.6.51 + 2.9 = ? (a) 6.8 (b) 9.41 (c) 9.51 (d) 9.31
  32. 32.4.89 + 3.7 = ? (a) 8.69 (b) 5.26 (c) 8.49 (d) 8.59
  33. 33.2.75 + 3.9 = ? (a) 6.75 (b) 6.55 (c) 3.14 (d) 6.65
  34. 34.3.87 + 4.5 = ? (a) 8.37 (b) 8.27 (c) 8.47 (d) 4.32
  35. 35.8.71 + 4.1 = ? (a) 12.91 (b) 12.81 (c) 9.12 (d) 12.71
  36. 36.What is the value of the digit 4 in 41.592? (a) 4 (b) 0.04 (c) 0.4 (d) 40
  37. 37.9.44 + 7.1 = ? (a) 16.44 (b) 10.15 (c) 16.54 (d) 16.64
  38. 38.1.86 + 5.2 = ? (a) 6.96 (b) 7.16 (c) 7.06 (d) 2.38
  39. 39.What is the value of the digit 6 in 68.452? (a) 0.6 (b) 6 (c) 0.06 (d) 60
  40. 40.7.64 + 6.2 = ? (a) 13.84 (b) 8.26 (c) 13.74 (d) 13.94

Answer key

  1. 0.72
  2. 15.19
  3. 0.005
  4. 3.25
  5. 10.86
  6. 0.3
  7. 30
  8. 0.017
  9. 8.68
  10. 0.7
  11. 0.007
  12. 9.11
  13. 4
  14. 9.13
  15. 11.21
  16. 0.39
  17. 1
  18. 0.073
  19. 0.89
  20. 0.61
  21. 7.13
  22. 0.1
  23. 0.017
  24. 5.98
  25. 0.64
  26. 0.095
  27. 12.14
  28. 5
  29. 14.61
  30. 10.25
  31. 9.41
  32. 8.59
  33. 6.65
  34. 8.37
  35. 12.81
  36. 40
  37. 16.54
  38. 7.06
  39. 60
  40. 13.84

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