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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 728 · 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. 1.2.02 + 2.1 = ? (a) 4.02 (b) 4.22 (c) 2.23 (d) 4.12
  2. 2.What is the value of the digit 6 in 63.417? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  3. 3.7.36 + 1.2 = ? (a) 7.48 (b) 8.56 (c) 8.46 (d) 8.66
  4. 4.1.21 + 5.2 = ? (a) 6.31 (b) 6.51 (c) 1.73 (d) 6.41
  5. 5.What is the value of the digit 7 in 92.387? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  6. 6.8.07 + 2.2 = ? (a) 10.17 (b) 10.37 (c) 10.27 (d) 8.29
  7. 7.3.68 + 1.7 = ? (a) 5.48 (b) 5.38 (c) 3.85 (d) 5.28
  8. 8.Which is the greatest: 0.528, 0.61, 0.011, 0.6? (a) 0.528 (b) 0.61 (c) 0.011 (d) 0.6
  9. 9.2.99 + 2.4 = ? (a) 5.49 (b) 3.23 (c) 5.39 (d) 5.29
  10. 10.7.74 + 5.3 = ? (a) 13.04 (b) 13.14 (c) 12.94 (d) 8.27
  11. 11.What is the value of the digit 2 in 85.231? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  12. 12.What is the value of the digit 8 in 14.398? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  13. 13.2.95 + 7.6 = ? (a) 10.45 (b) 10.55 (c) 3.71 (d) 10.65
  14. 14.1.55 + 2.1 = ? (a) 3.55 (b) 3.75 (c) 3.65 (d) 1.76
  15. 15.2.15 + 1.4 = ? (a) 3.55 (b) 2.29 (c) 3.45 (d) 3.65
  16. 16.Which is the greatest: 0.7, 0.072, 0.678, 0.74? (a) 0.7 (b) 0.072 (c) 0.678 (d) 0.74
  17. 17.Which is the smallest: 0.7, 0.022, 0.77, 0.658? (a) 0.7 (b) 0.022 (c) 0.77 (d) 0.658
  18. 18.2.51 + 9.8 = ? (a) 12.21 (b) 12.41 (c) 3.49 (d) 12.31
  19. 19.3.18 + 3.2 = ? (a) 6.28 (b) 6.38 (c) 6.48 (d) 3.5
  20. 20.Which is the greatest: 0.24, 0.2, 0.032, 0.124? (a) 0.24 (b) 0.2 (c) 0.032 (d) 0.124
  21. 21.Which is the greatest: 0.8, 0.84, 0.066, 0.791? (a) 0.8 (b) 0.84 (c) 0.066 (d) 0.791
  22. 22.2.61 + 2.7 = ? (a) 5.31 (b) 5.41 (c) 5.21 (d) 2.88
  23. 23.5.47 + 1.9 = ? (a) 7.27 (b) 7.37 (c) 5.66 (d) 7.47
  24. 24.3.81 + 7.1 = ? (a) 10.81 (b) 11.01 (c) 10.91 (d) 4.52
  25. 25.What is the value of the digit 9 in 15.389? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  26. 26.What is the value of the digit 1 in 12.647? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  27. 27.Which is the smallest: 0.86, 0.097, 0.731, 0.8? (a) 0.86 (b) 0.097 (c) 0.731 (d) 0.8
  28. 28.1.62 + 8.9 = ? (a) 10.52 (b) 2.51 (c) 10.42 (d) 10.62
  29. 29.7.19 + 5.1 = ? (a) 12.39 (b) 7.7 (c) 12.19 (d) 12.29
  30. 30.Which is the greatest: 0.76, 0.036, 0.679, 0.7? (a) 0.76 (b) 0.036 (c) 0.679 (d) 0.7
  31. 31.What is the value of the digit 9 in 91.324? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  32. 32.5.27 + 1.1 = ? (a) 5.38 (b) 6.27 (c) 6.47 (d) 6.37
  33. 33.What is the value of the digit 1 in 31.265? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  34. 34.4.89 + 1.8 = ? (a) 6.69 (b) 6.79 (c) 5.07 (d) 6.59
  35. 35.Which is the smallest: 0.687, 0.7, 0.79, 0.066? (a) 0.687 (b) 0.7 (c) 0.79 (d) 0.066
  36. 36.What is the value of the digit 5 in 57.621? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  37. 37.Which is the smallest: 0.3, 0.271, 0.098, 0.36? (a) 0.3 (b) 0.271 (c) 0.098 (d) 0.36
  38. 38.8.68 + 1.3 = ? (a) 8.81 (b) 9.88 (c) 9.98 (d) 10.08
  39. 39.What is the value of the digit 7 in 57.162? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  40. 40.9.65 + 1.2 = ? (a) 10.85 (b) 10.75 (c) 9.77 (d) 10.95

Answer key

  1. 4.12
  2. 60
  3. 8.56
  4. 6.41
  5. 0.007
  6. 10.27
  7. 5.38
  8. 0.61
  9. 5.39
  10. 13.04
  11. 0.2
  12. 0.008
  13. 10.55
  14. 3.65
  15. 3.55
  16. 0.74
  17. 0.022
  18. 12.31
  19. 6.38
  20. 0.24
  21. 0.84
  22. 5.31
  23. 7.37
  24. 10.91
  25. 0.009
  26. 10
  27. 0.097
  28. 10.52
  29. 12.29
  30. 0.76
  31. 90
  32. 6.37
  33. 1
  34. 6.69
  35. 0.066
  36. 50
  37. 0.098
  38. 9.98
  39. 7
  40. 10.85

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