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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 504 · 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 1 in 57.126? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  2. 2.9.56 + 6.2 = ? (a) 15.86 (b) 15.76 (c) 10.18 (d) 15.66
  3. 3.4.61 + 1.2 = ? (a) 5.81 (b) 5.91 (c) 4.73 (d) 5.71
  4. 4.Which is the smallest: 0.081, 0.5, 0.56, 0.452? (a) 0.081 (b) 0.5 (c) 0.56 (d) 0.452
  5. 5.What is the value of the digit 3 in 14.396? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  6. 6.9.83 + 5.5 = ? (a) 10.38 (b) 15.33 (c) 15.43 (d) 15.23
  7. 7.What is the value of the digit 6 in 36.845? (a) 6 (b) 0.06 (c) 0.6 (d) 60
  8. 8.Which is the smallest: 0.264, 0.045, 0.39, 0.3? (a) 0.264 (b) 0.045 (c) 0.39 (d) 0.3
  9. 9.What is the value of the digit 4 in 61.432? (a) 0.04 (b) 0.004 (c) 4 (d) 0.4
  10. 10.Which is the greatest: 0.532, 0.6, 0.67, 0.023? (a) 0.532 (b) 0.6 (c) 0.67 (d) 0.023
  11. 11.Which is the greatest: 0.8, 0.768, 0.83, 0.082? (a) 0.8 (b) 0.768 (c) 0.83 (d) 0.082
  12. 12.1.34 + 4.6 = ? (a) 5.84 (b) 5.94 (c) 1.8 (d) 6.04
  13. 13.What is the value of the digit 8 in 18.452? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  14. 14.2.18 + 7.5 = ? (a) 9.58 (b) 9.68 (c) 9.78 (d) 2.93
  15. 15.4.71 + 7.7 = ? (a) 5.48 (b) 12.31 (c) 12.41 (d) 12.51
  16. 16.3.01 + 3.2 = ? (a) 3.33 (b) 6.11 (c) 6.31 (d) 6.21
  17. 17.2.03 + 3.1 = ? (a) 5.13 (b) 5.03 (c) 5.23 (d) 2.34
  18. 18.Which is the greatest: 0.038, 0.79, 0.645, 0.7? (a) 0.038 (b) 0.79 (c) 0.645 (d) 0.7
  19. 19.Which is the greatest: 0.22, 0.045, 0.144, 0.2? (a) 0.22 (b) 0.045 (c) 0.144 (d) 0.2
  20. 20.6.89 + 6.6 = ? (a) 13.59 (b) 13.39 (c) 7.55 (d) 13.49
  21. 21.1.38 + 3.6 = ? (a) 4.98 (b) 5.08 (c) 1.74 (d) 4.88
  22. 22.1.35 + 8.6 = ? (a) 9.85 (b) 10.05 (c) 9.95 (d) 2.21
  23. 23.3.87 + 9.6 = ? (a) 13.47 (b) 13.37 (c) 4.83 (d) 13.57
  24. 24.What is the value of the digit 3 in 32.749? (a) 3 (b) 0.03 (c) 30 (d) 0.3
  25. 25.What is the value of the digit 7 in 21.857? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  26. 26.Which is the smallest: 0.22, 0.2, 0.188, 0.097? (a) 0.22 (b) 0.2 (c) 0.188 (d) 0.097
  27. 27.Which is the greatest: 0.5, 0.081, 0.422, 0.53? (a) 0.5 (b) 0.081 (c) 0.422 (d) 0.53
  28. 28.What is the value of the digit 9 in 59.768? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  29. 29.What is the value of the digit 7 in 57.149? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  30. 30.Which is the smallest: 0.43, 0.089, 0.365, 0.4? (a) 0.43 (b) 0.089 (c) 0.365 (d) 0.4
  31. 31.Which is the greatest: 0.621, 0.71, 0.083, 0.7? (a) 0.621 (b) 0.71 (c) 0.083 (d) 0.7
  32. 32.3.45 + 1.4 = ? (a) 4.95 (b) 4.85 (c) 4.75 (d) 3.59
  33. 33.Which is the greatest: 0.058, 0.85, 0.8, 0.723? (a) 0.058 (b) 0.85 (c) 0.8 (d) 0.723
  34. 34.5.37 + 8.1 = ? (a) 13.57 (b) 13.37 (c) 13.47 (d) 6.18
  35. 35.Which is the smallest: 0.063, 0.21, 0.166, 0.2? (a) 0.063 (b) 0.21 (c) 0.166 (d) 0.2
  36. 36.4.95 + 2.1 = ? (a) 7.15 (b) 6.95 (c) 7.05 (d) 5.16
  37. 37.4.44 + 8.5 = ? (a) 5.29 (b) 13.04 (c) 12.94 (d) 12.84
  38. 38.What is the value of the digit 5 in 51.628? (a) 0.05 (b) 50 (c) 0.5 (d) 5
  39. 39.Which is the greatest: 0.017, 0.2, 0.28, 0.125? (a) 0.017 (b) 0.2 (c) 0.28 (d) 0.125
  40. 40.What is the value of the digit 3 in 26.831? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3

Answer key

  1. 0.1
  2. 15.76
  3. 5.81
  4. 0.081
  5. 0.3
  6. 15.33
  7. 6
  8. 0.045
  9. 0.4
  10. 0.67
  11. 0.83
  12. 5.94
  13. 8
  14. 9.68
  15. 12.41
  16. 6.21
  17. 5.13
  18. 0.79
  19. 0.22
  20. 13.49
  21. 4.98
  22. 9.95
  23. 13.47
  24. 30
  25. 0.007
  26. 0.097
  27. 0.53
  28. 9
  29. 7
  30. 0.089
  31. 0.71
  32. 4.85
  33. 0.85
  34. 13.47
  35. 0.063
  36. 7.05
  37. 12.94
  38. 50
  39. 0.28
  40. 0.03

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