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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 937 · 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 4 in 42.371? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  2. 2.4.69 + 1.7 = ? (a) 4.86 (b) 6.49 (c) 6.29 (d) 6.39
  3. 3.6.22 + 7.1 = ? (a) 13.42 (b) 13.32 (c) 6.93 (d) 13.22
  4. 4.Which is the greatest: 0.248, 0.3, 0.38, 0.057? (a) 0.248 (b) 0.3 (c) 0.38 (d) 0.057
  5. 5.Which is the greatest: 0.5, 0.429, 0.018, 0.57? (a) 0.5 (b) 0.429 (c) 0.018 (d) 0.57
  6. 6.Which is the greatest: 0.098, 0.75, 0.7, 0.632? (a) 0.098 (b) 0.75 (c) 0.7 (d) 0.632
  7. 7.8.21 + 4.1 = ? (a) 12.21 (b) 12.41 (c) 8.62 (d) 12.31
  8. 8.What is the value of the digit 1 in 97.163? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  9. 9.4.31 + 3.7 = ? (a) 8.01 (b) 8.11 (c) 7.91 (d) 4.68
  10. 10.What is the value of the digit 1 in 12.345? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  11. 11.Which is the smallest: 0.053, 0.7, 0.689, 0.74? (a) 0.053 (b) 0.7 (c) 0.689 (d) 0.74
  12. 12.9.41 + 7.1 = ? (a) 16.51 (b) 16.41 (c) 16.61 (d) 10.12
  13. 13.9.39 + 5.4 = ? (a) 9.93 (b) 14.89 (c) 14.69 (d) 14.79
  14. 14.Which is the greatest: 0.058, 0.617, 0.7, 0.76? (a) 0.058 (b) 0.617 (c) 0.7 (d) 0.76
  15. 15.Which is the smallest: 0.31, 0.036, 0.261, 0.3? (a) 0.31 (b) 0.036 (c) 0.261 (d) 0.3
  16. 16.8.08 + 7.1 = ? (a) 15.18 (b) 8.79 (c) 15.28 (d) 15.08
  17. 17.7.31 + 8.6 = ? (a) 16.01 (b) 8.17 (c) 15.81 (d) 15.91
  18. 18.4.24 + 2.9 = ? (a) 7.14 (b) 4.53 (c) 7.24 (d) 7.04
  19. 19.5.39 + 8.3 = ? (a) 13.69 (b) 13.59 (c) 13.79 (d) 6.22
  20. 20.What is the value of the digit 5 in 45.912? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  21. 21.Which is the greatest: 0.098, 0.3, 0.271, 0.36? (a) 0.098 (b) 0.3 (c) 0.271 (d) 0.36
  22. 22.What is the value of the digit 1 in 75.134? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  23. 23.2.81 + 3.9 = ? (a) 3.2 (b) 6.61 (c) 6.81 (d) 6.71
  24. 24.9.33 + 6.9 = ? (a) 16.13 (b) 16.23 (c) 10.02 (d) 16.33
  25. 25.What is the value of the digit 3 in 17.493? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  26. 26.9.56 + 7.3 = ? (a) 10.29 (b) 16.86 (c) 16.76 (d) 16.96
  27. 27.Which is the smallest: 0.556, 0.66, 0.6, 0.049? (a) 0.556 (b) 0.66 (c) 0.6 (d) 0.049
  28. 28.5.27 + 6.3 = ? (a) 11.67 (b) 5.9 (c) 11.57 (d) 11.47
  29. 29.What is the value of the digit 2 in 25.164? (a) 20 (b) 2 (c) 0.02 (d) 0.2
  30. 30.7.28 + 7.3 = ? (a) 14.48 (b) 14.68 (c) 8.01 (d) 14.58
  31. 31.Which is the greatest: 0.033, 0.42, 0.332, 0.4? (a) 0.033 (b) 0.42 (c) 0.332 (d) 0.4
  32. 32.1.29 + 1.7 = ? (a) 1.46 (b) 2.89 (c) 2.99 (d) 3.09
  33. 33.What is the value of the digit 9 in 97.658? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  34. 34.What is the value of the digit 3 in 27.839? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  35. 35.Which is the smallest: 0.413, 0.52, 0.5, 0.031? (a) 0.413 (b) 0.52 (c) 0.5 (d) 0.031
  36. 36.What is the value of the digit 9 in 85.964? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  37. 37.What is the value of the digit 8 in 89.421? (a) 8 (b) 0.08 (c) 0.8 (d) 80
  38. 38.What is the value of the digit 6 in 45.682? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  39. 39.5.61 + 1.1 = ? (a) 6.71 (b) 6.61 (c) 5.72 (d) 6.81
  40. 40.3.15 + 2.1 = ? (a) 3.36 (b) 5.35 (c) 5.15 (d) 5.25

Answer key

  1. 40
  2. 6.39
  3. 13.32
  4. 0.38
  5. 0.57
  6. 0.75
  7. 12.31
  8. 0.1
  9. 8.01
  10. 10
  11. 0.053
  12. 16.51
  13. 14.79
  14. 0.76
  15. 0.036
  16. 15.18
  17. 15.91
  18. 7.14
  19. 13.69
  20. 5
  21. 0.36
  22. 0.1
  23. 6.71
  24. 16.23
  25. 0.003
  26. 16.86
  27. 0.049
  28. 11.57
  29. 20
  30. 14.58
  31. 0.42
  32. 2.99
  33. 90
  34. 0.03
  35. 0.031
  36. 0.9
  37. 80
  38. 0.6
  39. 6.71
  40. 5.25

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