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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 342 · 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. 1.1.14 + 4.3 = ? (a) 1.57 (b) 5.44 (c) 5.34 (d) 5.54
  2. 2.Which is the greatest: 0.021, 0.628, 0.76, 0.7? (a) 0.021 (b) 0.628 (c) 0.76 (d) 0.7
  3. 3.What is the value of the digit 7 in 27.543? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  4. 4.Which is the smallest: 0.092, 0.611, 0.77, 0.7? (a) 0.092 (b) 0.611 (c) 0.77 (d) 0.7
  5. 5.Which is the smallest: 0.6, 0.65, 0.536, 0.065? (a) 0.6 (b) 0.65 (c) 0.536 (d) 0.065
  6. 6.Which is the smallest: 0.054, 0.782, 0.8, 0.81? (a) 0.054 (b) 0.782 (c) 0.8 (d) 0.81
  7. 7.1.02 + 2.1 = ? (a) 3.22 (b) 1.23 (c) 3.12 (d) 3.02
  8. 8.7.43 + 9.2 = ? (a) 16.53 (b) 16.73 (c) 16.63 (d) 8.35
  9. 9.4.15 + 8.7 = ? (a) 12.95 (b) 5.02 (c) 12.85 (d) 12.75
  10. 10.8.23 + 7.6 = ? (a) 8.99 (b) 15.73 (c) 15.93 (d) 15.83
  11. 11.What is the value of the digit 2 in 83.942? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  12. 12.Which is the smallest: 0.016, 0.419, 0.5, 0.52? (a) 0.016 (b) 0.419 (c) 0.5 (d) 0.52
  13. 13.7.84 + 3.9 = ? (a) 11.74 (b) 11.64 (c) 11.84 (d) 8.23
  14. 14.What is the value of the digit 1 in 54.731? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  15. 15.Which is the greatest: 0.064, 0.7, 0.79, 0.615? (a) 0.064 (b) 0.7 (c) 0.79 (d) 0.615
  16. 16.Which is the smallest: 0.024, 0.46, 0.318, 0.4? (a) 0.024 (b) 0.46 (c) 0.318 (d) 0.4
  17. 17.5.51 + 9.5 = ? (a) 15.01 (b) 15.11 (c) 6.46 (d) 14.91
  18. 18.What is the value of the digit 4 in 29.174? (a) 0.04 (b) 0.004 (c) 4 (d) 0.4
  19. 19.What is the value of the digit 2 in 78.592? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  20. 20.Which is the greatest: 0.51, 0.048, 0.5, 0.449? (a) 0.51 (b) 0.048 (c) 0.5 (d) 0.449
  21. 21.What is the value of the digit 9 in 47.195? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  22. 22.Which is the greatest: 0.029, 0.497, 0.59, 0.5? (a) 0.029 (b) 0.497 (c) 0.59 (d) 0.5
  23. 23.What is the value of the digit 8 in 31.478? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  24. 24.Which is the smallest: 0.5, 0.54, 0.411, 0.043? (a) 0.5 (b) 0.54 (c) 0.411 (d) 0.043
  25. 25.What is the value of the digit 7 in 86.571? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  26. 26.8.46 + 1.6 = ? (a) 10.16 (b) 8.62 (c) 10.06 (d) 9.96
  27. 27.6.97 + 4.3 = ? (a) 7.4 (b) 11.37 (c) 11.17 (d) 11.27
  28. 28.Which is the smallest: 0.072, 0.5, 0.459, 0.55? (a) 0.072 (b) 0.5 (c) 0.459 (d) 0.55
  29. 29.5.86 + 3.1 = ? (a) 8.86 (b) 8.96 (c) 9.06 (d) 6.17
  30. 30.1.33 + 4.1 = ? (a) 5.53 (b) 5.33 (c) 5.43 (d) 1.74
  31. 31.3.39 + 6.6 = ? (a) 4.05 (b) 10.09 (c) 9.99 (d) 9.89
  32. 32.2.61 + 7.3 = ? (a) 9.91 (b) 9.81 (c) 10.01 (d) 3.34
  33. 33.What is the value of the digit 2 in 12.957? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  34. 34.2.17 + 7.4 = ? (a) 9.47 (b) 2.91 (c) 9.67 (d) 9.57
  35. 35.What is the value of the digit 4 in 46.125? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  36. 36.2.31 + 6.4 = ? (a) 8.71 (b) 8.81 (c) 8.61 (d) 2.95
  37. 37.What is the value of the digit 2 in 57.923? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  38. 38.6.69 + 2.8 = ? (a) 9.59 (b) 9.49 (c) 6.97 (d) 9.39
  39. 39.What is the value of the digit 6 in 29.367? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  40. 40.6.84 + 4.3 = ? (a) 11.24 (b) 11.04 (c) 11.14 (d) 7.27

Answer key

  1. 5.44
  2. 0.76
  3. 7
  4. 0.092
  5. 0.065
  6. 0.054
  7. 3.12
  8. 16.63
  9. 12.85
  10. 15.83
  11. 0.002
  12. 0.016
  13. 11.74
  14. 0.001
  15. 0.79
  16. 0.024
  17. 15.01
  18. 0.004
  19. 0.002
  20. 0.51
  21. 0.09
  22. 0.59
  23. 0.008
  24. 0.043
  25. 0.07
  26. 10.06
  27. 11.27
  28. 0.072
  29. 8.96
  30. 5.43
  31. 9.99
  32. 9.91
  33. 2
  34. 9.57
  35. 40
  36. 8.71
  37. 0.02
  38. 9.49
  39. 0.06
  40. 11.14

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