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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 232 · 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. 1.1.41 + 3.3 = ? (a) 4.61 (b) 1.74 (c) 4.71 (d) 4.81
  2. 2.6.05 + 2.4 = ? (a) 6.29 (b) 8.35 (c) 8.45 (d) 8.55
  3. 3.9.23 + 6.3 = ? (a) 15.53 (b) 15.43 (c) 9.86 (d) 15.63
  4. 4.What is the value of the digit 1 in 13.974? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  5. 5.What is the value of the digit 5 in 63.457? (a) 0.05 (b) 0.5 (c) 0.005 (d) 5
  6. 6.What is the value of the digit 5 in 54.961? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  7. 7.What is the value of the digit 9 in 92.347? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  8. 8.4.15 + 4.1 = ? (a) 8.25 (b) 4.56 (c) 8.15 (d) 8.35
  9. 9.Which is the greatest: 0.095, 0.4, 0.48, 0.315? (a) 0.095 (b) 0.4 (c) 0.48 (d) 0.315
  10. 10.3.38 + 9.4 = ? (a) 4.32 (b) 12.88 (c) 12.78 (d) 12.68
  11. 11.7.01 + 3.5 = ? (a) 7.36 (b) 10.41 (c) 10.51 (d) 10.61
  12. 12.What is the value of the digit 2 in 49.126? (a) 0.002 (b) 0.02 (c) 2 (d) 0.2
  13. 13.Which is the smallest: 0.044, 0.28, 0.119, 0.2? (a) 0.044 (b) 0.28 (c) 0.119 (d) 0.2
  14. 14.Which is the greatest: 0.42, 0.035, 0.366, 0.4? (a) 0.42 (b) 0.035 (c) 0.366 (d) 0.4
  15. 15.What is the value of the digit 2 in 32.791? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  16. 16.Which is the smallest: 0.652, 0.77, 0.034, 0.7? (a) 0.652 (b) 0.77 (c) 0.034 (d) 0.7
  17. 17.5.77 + 8.2 = ? (a) 13.97 (b) 13.87 (c) 14.07 (d) 6.59
  18. 18.Which is the smallest: 0.339, 0.042, 0.45, 0.4? (a) 0.339 (b) 0.042 (c) 0.45 (d) 0.4
  19. 19.8.72 + 9.1 = ? (a) 17.72 (b) 17.82 (c) 17.92 (d) 9.63
  20. 20.7.13 + 2.7 = ? (a) 9.83 (b) 9.93 (c) 7.4 (d) 9.73
  21. 21.What is the value of the digit 2 in 21.956? (a) 0.2 (b) 2 (c) 0.02 (d) 20
  22. 22.5.71 + 3.4 = ? (a) 9.21 (b) 6.05 (c) 9.01 (d) 9.11
  23. 23.3.93 + 2.1 = ? (a) 6.13 (b) 5.93 (c) 4.14 (d) 6.03
  24. 24.Which is the greatest: 0.69, 0.6, 0.047, 0.569? (a) 0.69 (b) 0.6 (c) 0.047 (d) 0.569
  25. 25.Which is the smallest: 0.074, 0.722, 0.8, 0.89? (a) 0.074 (b) 0.722 (c) 0.8 (d) 0.89
  26. 26.3.89 + 9.1 = ? (a) 4.8 (b) 12.89 (c) 13.09 (d) 12.99
  27. 27.Which is the smallest: 0.063, 0.28, 0.149, 0.2? (a) 0.063 (b) 0.28 (c) 0.149 (d) 0.2
  28. 28.What is the value of the digit 3 in 57.314? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  29. 29.8.67 + 9.1 = ? (a) 17.77 (b) 17.87 (c) 17.67 (d) 9.58
  30. 30.1.53 + 8.8 = ? (a) 10.33 (b) 10.23 (c) 10.43 (d) 2.41
  31. 31.5.17 + 2.8 = ? (a) 5.45 (b) 7.87 (c) 7.97 (d) 8.07
  32. 32.What is the value of the digit 7 in 87.495? (a) 0.07 (b) 70 (c) 7 (d) 0.7
  33. 33.Which is the greatest: 0.58, 0.494, 0.5, 0.097? (a) 0.58 (b) 0.494 (c) 0.5 (d) 0.097
  34. 34.7.87 + 1.1 = ? (a) 8.97 (b) 9.07 (c) 7.98 (d) 8.87
  35. 35.2.81 + 3.6 = ? (a) 6.31 (b) 3.17 (c) 6.51 (d) 6.41
  36. 36.Which is the smallest: 0.752, 0.87, 0.075, 0.8? (a) 0.752 (b) 0.87 (c) 0.075 (d) 0.8
  37. 37.2.54 + 2.4 = ? (a) 4.94 (b) 5.04 (c) 2.78 (d) 4.84
  38. 38.What is the value of the digit 5 in 74.153? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  39. 39.3.65 + 1.3 = ? (a) 4.85 (b) 4.95 (c) 5.05 (d) 3.78
  40. 40.8.28 + 1.5 = ? (a) 8.43 (b) 9.68 (c) 9.88 (d) 9.78

Answer key

  1. 4.71
  2. 8.45
  3. 15.53
  4. 10
  5. 0.05
  6. 50
  7. 90
  8. 8.25
  9. 0.48
  10. 12.78
  11. 10.51
  12. 0.02
  13. 0.044
  14. 0.42
  15. 2
  16. 0.034
  17. 13.97
  18. 0.042
  19. 17.82
  20. 9.83
  21. 20
  22. 9.11
  23. 6.03
  24. 0.69
  25. 0.074
  26. 12.99
  27. 0.063
  28. 0.3
  29. 17.77
  30. 10.33
  31. 7.97
  32. 7
  33. 0.58
  34. 8.97
  35. 6.41
  36. 0.075
  37. 4.94
  38. 0.05
  39. 4.95
  40. 9.78

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