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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 370 · 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. 1.3.32 + 3.2 = ? (a) 6.42 (b) 6.52 (c) 6.62 (d) 3.64
  2. 2.4.82 + 1.1 = ? (a) 5.82 (b) 4.93 (c) 5.92 (d) 6.02
  3. 3.Which is the greatest: 0.5, 0.092, 0.457, 0.58? (a) 0.5 (b) 0.092 (c) 0.457 (d) 0.58
  4. 4.3.07 + 1.4 = ? (a) 4.57 (b) 4.37 (c) 4.47 (d) 3.21
  5. 5.Which is the greatest: 0.617, 0.72, 0.094, 0.7? (a) 0.617 (b) 0.72 (c) 0.094 (d) 0.7
  6. 6.Which is the smallest: 0.438, 0.52, 0.5, 0.039? (a) 0.438 (b) 0.52 (c) 0.5 (d) 0.039
  7. 7.What is the value of the digit 7 in 52.879? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  8. 8.Which is the greatest: 0.84, 0.8, 0.072, 0.761? (a) 0.84 (b) 0.8 (c) 0.072 (d) 0.761
  9. 9.8.02 + 8.1 = ? (a) 16.22 (b) 8.83 (c) 16.12 (d) 16.02
  10. 10.2.33 + 1.8 = ? (a) 4.13 (b) 2.51 (c) 4.03 (d) 4.23
  11. 11.What is the value of the digit 1 in 97.621? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  12. 12.2.59 + 4.4 = ? (a) 3.03 (b) 6.89 (c) 7.09 (d) 6.99
  13. 13.What is the value of the digit 4 in 45.273? (a) 40 (b) 4 (c) 0.04 (d) 0.4
  14. 14.Which is the greatest: 0.051, 0.2, 0.22, 0.141? (a) 0.051 (b) 0.2 (c) 0.22 (d) 0.141
  15. 15.What is the value of the digit 6 in 54.671? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  16. 16.7.42 + 6.9 = ? (a) 8.11 (b) 14.42 (c) 14.22 (d) 14.32
  17. 17.Which is the smallest: 0.52, 0.451, 0.033, 0.5? (a) 0.52 (b) 0.451 (c) 0.033 (d) 0.5
  18. 18.2.96 + 6.5 = ? (a) 9.36 (b) 3.61 (c) 9.56 (d) 9.46
  19. 19.5.15 + 2.6 = ? (a) 7.75 (b) 7.85 (c) 7.65 (d) 5.41
  20. 20.What is the value of the digit 6 in 89.642? (a) 0.6 (b) 0.006 (c) 0.06 (d) 6
  21. 21.Which is the greatest: 0.054, 0.59, 0.5, 0.483? (a) 0.054 (b) 0.59 (c) 0.5 (d) 0.483
  22. 22.1.98 + 9.1 = ? (a) 2.89 (b) 11.08 (c) 11.18 (d) 10.98
  23. 23.8.72 + 6.9 = ? (a) 15.62 (b) 15.72 (c) 15.52 (d) 9.41
  24. 24.1.31 + 2.4 = ? (a) 3.71 (b) 3.81 (c) 1.55 (d) 3.61
  25. 25.Which is the greatest: 0.044, 0.796, 0.8, 0.89? (a) 0.044 (b) 0.796 (c) 0.8 (d) 0.89
  26. 26.What is the value of the digit 1 in 62.831? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  27. 27.8.84 + 1.1 = ? (a) 10.04 (b) 8.95 (c) 9.94 (d) 9.84
  28. 28.What is the value of the digit 5 in 25.634? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  29. 29.What is the value of the digit 3 in 54.382? (a) 0.003 (b) 0.3 (c) 0.03 (d) 3
  30. 30.What is the value of the digit 1 in 12.435? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  31. 31.What is the value of the digit 5 in 98.561? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  32. 32.1.22 + 7.1 = ? (a) 8.32 (b) 8.42 (c) 8.22 (d) 1.93
  33. 33.5.45 + 6.5 = ? (a) 6.1 (b) 11.85 (c) 11.95 (d) 12.05
  34. 34.5.29 + 8.6 = ? (a) 13.99 (b) 13.79 (c) 13.89 (d) 6.15
  35. 35.What is the value of the digit 7 in 97.241? (a) 0.07 (b) 70 (c) 0.7 (d) 7
  36. 36.7.31 + 6.2 = ? (a) 7.93 (b) 13.41 (c) 13.51 (d) 13.61
  37. 37.Which is the smallest: 0.59, 0.042, 0.446, 0.5? (a) 0.59 (b) 0.042 (c) 0.446 (d) 0.5
  38. 38.5.43 + 2.7 = ? (a) 8.03 (b) 8.13 (c) 8.23 (d) 5.7
  39. 39.What is the value of the digit 4 in 23.415? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  40. 40.What is the value of the digit 1 in 84.192? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1

Answer key

  1. 6.52
  2. 5.92
  3. 0.58
  4. 4.47
  5. 0.72
  6. 0.039
  7. 0.07
  8. 0.84
  9. 16.12
  10. 4.13
  11. 0.001
  12. 6.99
  13. 40
  14. 0.22
  15. 0.6
  16. 14.32
  17. 0.033
  18. 9.46
  19. 7.75
  20. 0.6
  21. 0.59
  22. 11.08
  23. 15.62
  24. 3.71
  25. 0.89
  26. 0.001
  27. 9.94
  28. 5
  29. 0.3
  30. 10
  31. 0.5
  32. 8.32
  33. 11.95
  34. 13.89
  35. 7
  36. 13.51
  37. 0.042
  38. 8.13
  39. 0.4
  40. 0.1

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