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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 257 · 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. 1.3.02 + 3.1 = ? (a) 3.33 (b) 6.02 (c) 6.12 (d) 6.22
  2. 2.2.84 + 2.2 = ? (a) 5.04 (b) 5.14 (c) 4.94 (d) 3.06
  3. 3.What is the value of the digit 6 in 64.871? (a) 0.6 (b) 6 (c) 0.06 (d) 60
  4. 4.Which is the greatest: 0.115, 0.048, 0.22, 0.2? (a) 0.115 (b) 0.048 (c) 0.22 (d) 0.2
  5. 5.5.11 + 7.6 = ? (a) 5.87 (b) 12.61 (c) 12.81 (d) 12.71
  6. 6.What is the value of the digit 9 in 76.189? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  7. 7.7.75 + 3.5 = ? (a) 11.15 (b) 11.25 (c) 8.1 (d) 11.35
  8. 8.2.58 + 9.1 = ? (a) 3.49 (b) 11.68 (c) 11.58 (d) 11.78
  9. 9.Which is the smallest: 0.3, 0.36, 0.233, 0.011? (a) 0.3 (b) 0.36 (c) 0.233 (d) 0.011
  10. 10.Which is the smallest: 0.25, 0.181, 0.081, 0.2? (a) 0.25 (b) 0.181 (c) 0.081 (d) 0.2
  11. 11.What is the value of the digit 1 in 84.712? (a) 0.1 (b) 0.001 (c) 0.01 (d) 1
  12. 12.What is the value of the digit 2 in 48.923? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  13. 13.What is the value of the digit 2 in 36.821? (a) 0.002 (b) 2 (c) 0.02 (d) 0.2
  14. 14.3.71 + 9.1 = ? (a) 12.71 (b) 12.81 (c) 4.62 (d) 12.91
  15. 15.Which is the greatest: 0.341, 0.43, 0.091, 0.4? (a) 0.341 (b) 0.43 (c) 0.091 (d) 0.4
  16. 16.7.95 + 8.9 = ? (a) 16.95 (b) 16.85 (c) 8.84 (d) 16.75
  17. 17.Which is the smallest: 0.7, 0.71, 0.093, 0.665? (a) 0.7 (b) 0.71 (c) 0.093 (d) 0.665
  18. 18.9.17 + 7.5 = ? (a) 16.67 (b) 16.57 (c) 9.92 (d) 16.77
  19. 19.What is the value of the digit 4 in 43.617? (a) 0.04 (b) 40 (c) 0.4 (d) 4
  20. 20.Which is the smallest: 0.67, 0.093, 0.6, 0.541? (a) 0.67 (b) 0.093 (c) 0.6 (d) 0.541
  21. 21.6.45 + 5.1 = ? (a) 6.96 (b) 11.55 (c) 11.65 (d) 11.45
  22. 22.1.14 + 7.5 = ? (a) 8.54 (b) 1.89 (c) 8.74 (d) 8.64
  23. 23.2.09 + 4.7 = ? (a) 6.79 (b) 6.69 (c) 6.89 (d) 2.56
  24. 24.Which is the greatest: 0.064, 0.787, 0.82, 0.8? (a) 0.064 (b) 0.787 (c) 0.82 (d) 0.8
  25. 25.5.58 + 3.4 = ? (a) 8.88 (b) 5.92 (c) 9.08 (d) 8.98
  26. 26.2.76 + 1.4 = ? (a) 4.26 (b) 4.16 (c) 4.06 (d) 2.9
  27. 27.4.57 + 8.3 = ? (a) 5.4 (b) 12.97 (c) 12.87 (d) 12.77
  28. 28.Which is the greatest: 0.52, 0.432, 0.5, 0.071? (a) 0.52 (b) 0.432 (c) 0.5 (d) 0.071
  29. 29.9.62 + 9.5 = ? (a) 10.57 (b) 19.02 (c) 19.22 (d) 19.12
  30. 30.8.91 + 7.7 = ? (a) 16.71 (b) 16.61 (c) 9.68 (d) 16.51
  31. 31.Which is the greatest: 0.79, 0.7, 0.658, 0.075? (a) 0.79 (b) 0.7 (c) 0.658 (d) 0.075
  32. 32.What is the value of the digit 3 in 49.513? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  33. 33.5.85 + 8.1 = ? (a) 13.85 (b) 6.66 (c) 13.95 (d) 14.05
  34. 34.What is the value of the digit 4 in 71.684? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  35. 35.9.32 + 1.7 = ? (a) 9.49 (b) 10.92 (c) 11.02 (d) 11.12
  36. 36.7.21 + 1.6 = ? (a) 7.37 (b) 8.71 (c) 8.91 (d) 8.81
  37. 37.What is the value of the digit 8 in 13.268? (a) 0.008 (b) 0.8 (c) 0.08 (d) 8
  38. 38.1.34 + 8.9 = ? (a) 10.34 (b) 2.23 (c) 10.14 (d) 10.24
  39. 39.Which is the greatest: 0.092, 0.451, 0.58, 0.5? (a) 0.092 (b) 0.451 (c) 0.58 (d) 0.5
  40. 40.7.47 + 8.4 = ? (a) 8.31 (b) 15.87 (c) 15.97 (d) 15.77

Answer key

  1. 6.12
  2. 5.04
  3. 60
  4. 0.22
  5. 12.71
  6. 0.009
  7. 11.25
  8. 11.68
  9. 0.011
  10. 0.081
  11. 0.01
  12. 0.02
  13. 0.02
  14. 12.81
  15. 0.43
  16. 16.85
  17. 0.093
  18. 16.67
  19. 40
  20. 0.093
  21. 11.55
  22. 8.64
  23. 6.79
  24. 0.82
  25. 8.98
  26. 4.16
  27. 12.87
  28. 0.52
  29. 19.12
  30. 16.61
  31. 0.79
  32. 0.003
  33. 13.95
  34. 0.004
  35. 11.02
  36. 8.81
  37. 0.008
  38. 10.24
  39. 0.58
  40. 15.87

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