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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 844 · 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. 1.1.26 + 5.9 = ? (a) 1.85 (b) 7.06 (c) 7.26 (d) 7.16
  2. 2.Which is the smallest: 0.7, 0.034, 0.74, 0.689? (a) 0.7 (b) 0.034 (c) 0.74 (d) 0.689
  3. 3.5.81 + 5.7 = ? (a) 11.61 (b) 11.51 (c) 11.41 (d) 6.38
  4. 4.Which is the greatest: 0.8, 0.747, 0.87, 0.088? (a) 0.8 (b) 0.747 (c) 0.87 (d) 0.088
  5. 5.Which is the greatest: 0.026, 0.49, 0.4, 0.372? (a) 0.026 (b) 0.49 (c) 0.4 (d) 0.372
  6. 6.Which is the smallest: 0.793, 0.85, 0.8, 0.025? (a) 0.793 (b) 0.85 (c) 0.8 (d) 0.025
  7. 7.Which is the greatest: 0.072, 0.66, 0.6, 0.585? (a) 0.072 (b) 0.66 (c) 0.6 (d) 0.585
  8. 8.1.61 + 7.2 = ? (a) 2.33 (b) 8.71 (c) 8.81 (d) 8.91
  9. 9.What is the value of the digit 8 in 81.729? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  10. 10.6.22 + 5.2 = ? (a) 11.42 (b) 11.32 (c) 6.74 (d) 11.52
  11. 11.Which is the smallest: 0.68, 0.582, 0.062, 0.6? (a) 0.68 (b) 0.582 (c) 0.062 (d) 0.6
  12. 12.1.37 + 6.9 = ? (a) 8.37 (b) 8.27 (c) 8.17 (d) 2.06
  13. 13.What is the value of the digit 3 in 61.543? (a) 0.03 (b) 3 (c) 0.3 (d) 0.003
  14. 14.6.78 + 4.6 = ? (a) 7.24 (b) 11.48 (c) 11.28 (d) 11.38
  15. 15.1.45 + 6.6 = ? (a) 7.95 (b) 8.15 (c) 8.05 (d) 2.11
  16. 16.What is the value of the digit 1 in 19.624? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  17. 17.What is the value of the digit 5 in 75.431? (a) 50 (b) 5 (c) 0.5 (d) 0.05
  18. 18.2.11 + 5.6 = ? (a) 7.81 (b) 2.67 (c) 7.61 (d) 7.71
  19. 19.3.51 + 9.2 = ? (a) 12.61 (b) 12.81 (c) 4.43 (d) 12.71
  20. 20.Which is the greatest: 0.037, 0.291, 0.3, 0.32? (a) 0.037 (b) 0.291 (c) 0.3 (d) 0.32
  21. 21.What is the value of the digit 1 in 52.714? (a) 1 (b) 0.001 (c) 0.1 (d) 0.01
  22. 22.Which is the smallest: 0.056, 0.41, 0.4, 0.363? (a) 0.056 (b) 0.41 (c) 0.4 (d) 0.363
  23. 23.Which is the greatest: 0.23, 0.111, 0.2, 0.011? (a) 0.23 (b) 0.111 (c) 0.2 (d) 0.011
  24. 24.What is the value of the digit 1 in 34.271? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  25. 25.7.18 + 1.4 = ? (a) 8.48 (b) 8.68 (c) 8.58 (d) 7.32
  26. 26.Which is the greatest: 0.5, 0.058, 0.444, 0.56? (a) 0.5 (b) 0.058 (c) 0.444 (d) 0.56
  27. 27.8.53 + 9.7 = ? (a) 18.13 (b) 9.5 (c) 18.33 (d) 18.23
  28. 28.Which is the greatest: 0.032, 0.5, 0.485, 0.52? (a) 0.032 (b) 0.5 (c) 0.485 (d) 0.52
  29. 29.4.09 + 2.9 = ? (a) 6.89 (b) 4.38 (c) 7.09 (d) 6.99
  30. 30.8.32 + 8.5 = ? (a) 9.17 (b) 16.92 (c) 16.82 (d) 16.72
  31. 31.6.36 + 4.3 = ? (a) 6.79 (b) 10.56 (c) 10.66 (d) 10.76
  32. 32.What is the value of the digit 7 in 32.475? (a) 7 (b) 0.007 (c) 0.7 (d) 0.07
  33. 33.Which is the smallest: 0.131, 0.22, 0.2, 0.011? (a) 0.131 (b) 0.22 (c) 0.2 (d) 0.011
  34. 34.Which is the greatest: 0.147, 0.091, 0.2, 0.21? (a) 0.147 (b) 0.091 (c) 0.2 (d) 0.21
  35. 35.6.18 + 5.2 = ? (a) 11.28 (b) 6.7 (c) 11.38 (d) 11.48
  36. 36.What is the value of the digit 4 in 42.869? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  37. 37.4.86 + 3.3 = ? (a) 8.16 (b) 5.19 (c) 8.26 (d) 8.06
  38. 38.6.88 + 4.8 = ? (a) 11.58 (b) 11.78 (c) 11.68 (d) 7.36
  39. 39.1.56 + 6.1 = ? (a) 2.17 (b) 7.66 (c) 7.56 (d) 7.76
  40. 40.Which is the smallest: 0.032, 0.287, 0.3, 0.37? (a) 0.032 (b) 0.287 (c) 0.3 (d) 0.37

Answer key

  1. 7.16
  2. 0.034
  3. 11.51
  4. 0.87
  5. 0.49
  6. 0.025
  7. 0.66
  8. 8.81
  9. 80
  10. 11.42
  11. 0.062
  12. 8.27
  13. 0.003
  14. 11.38
  15. 8.05
  16. 10
  17. 5
  18. 7.71
  19. 12.71
  20. 0.32
  21. 0.01
  22. 0.056
  23. 0.23
  24. 0.001
  25. 8.58
  26. 0.56
  27. 18.23
  28. 0.52
  29. 6.99
  30. 16.82
  31. 10.66
  32. 0.07
  33. 0.011
  34. 0.21
  35. 11.38
  36. 40
  37. 8.16
  38. 11.68
  39. 7.66
  40. 0.032

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