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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 234 · 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. 1.8.94 + 3.2 = ? (a) 9.26 (b) 12.24 (c) 12.14 (d) 12.04
  2. 2.1.93 + 9.1 = ? (a) 10.93 (b) 2.84 (c) 11.13 (d) 11.03
  3. 3.Which is the greatest: 0.5, 0.019, 0.492, 0.54? (a) 0.5 (b) 0.019 (c) 0.492 (d) 0.54
  4. 4.1.68 + 3.5 = ? (a) 5.08 (b) 5.18 (c) 2.03 (d) 5.28
  5. 5.Which is the greatest: 0.5, 0.52, 0.489, 0.017? (a) 0.5 (b) 0.52 (c) 0.489 (d) 0.017
  6. 6.1.71 + 4.1 = ? (a) 5.71 (b) 2.12 (c) 5.91 (d) 5.81
  7. 7.8.62 + 9.1 = ? (a) 17.82 (b) 17.62 (c) 17.72 (d) 9.53
  8. 8.4.34 + 6.8 = ? (a) 11.24 (b) 11.04 (c) 5.02 (d) 11.14
  9. 9.4.98 + 2.5 = ? (a) 7.38 (b) 5.23 (c) 7.48 (d) 7.58
  10. 10.Which is the smallest: 0.49, 0.322, 0.012, 0.4? (a) 0.49 (b) 0.322 (c) 0.012 (d) 0.4
  11. 11.Which is the smallest: 0.25, 0.052, 0.155, 0.2? (a) 0.25 (b) 0.052 (c) 0.155 (d) 0.2
  12. 12.6.88 + 1.4 = ? (a) 8.18 (b) 7.02 (c) 8.38 (d) 8.28
  13. 13.What is the value of the digit 4 in 15.748? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  14. 14.What is the value of the digit 1 in 92.185? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  15. 15.5.88 + 8.6 = ? (a) 14.38 (b) 14.48 (c) 6.74 (d) 14.58
  16. 16.Which is the smallest: 0.619, 0.7, 0.092, 0.79? (a) 0.619 (b) 0.7 (c) 0.092 (d) 0.79
  17. 17.8.96 + 9.2 = ? (a) 18.26 (b) 18.06 (c) 9.88 (d) 18.16
  18. 18.Which is the greatest: 0.054, 0.4, 0.369, 0.48? (a) 0.054 (b) 0.4 (c) 0.369 (d) 0.48
  19. 19.3.85 + 2.5 = ? (a) 6.45 (b) 4.1 (c) 6.35 (d) 6.25
  20. 20.Which is the greatest: 0.433, 0.55, 0.5, 0.019? (a) 0.433 (b) 0.55 (c) 0.5 (d) 0.019
  21. 21.7.55 + 4.4 = ? (a) 12.05 (b) 7.99 (c) 11.95 (d) 11.85
  22. 22.What is the value of the digit 6 in 38.546? (a) 0.6 (b) 0.006 (c) 0.06 (d) 6
  23. 23.Which is the greatest: 0.49, 0.075, 0.388, 0.4? (a) 0.49 (b) 0.075 (c) 0.388 (d) 0.4
  24. 24.What is the value of the digit 2 in 52.746? (a) 2 (b) 20 (c) 0.2 (d) 0.02
  25. 25.2.71 + 9.6 = ? (a) 3.67 (b) 12.21 (c) 12.31 (d) 12.41
  26. 26.7.51 + 5.1 = ? (a) 8.02 (b) 12.61 (c) 12.71 (d) 12.51
  27. 27.What is the value of the digit 3 in 79.315? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  28. 28.Which is the greatest: 0.428, 0.59, 0.094, 0.5? (a) 0.428 (b) 0.59 (c) 0.094 (d) 0.5
  29. 29.3.32 + 7.4 = ? (a) 10.62 (b) 10.82 (c) 10.72 (d) 4.06
  30. 30.Which is the smallest: 0.7, 0.72, 0.085, 0.642? (a) 0.7 (b) 0.72 (c) 0.085 (d) 0.642
  31. 31.What is the value of the digit 3 in 23.586? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  32. 32.What is the value of the digit 8 in 94.728? (a) 8 (b) 0.08 (c) 0.008 (d) 0.8
  33. 33.Which is the greatest: 0.51, 0.5, 0.032, 0.445? (a) 0.51 (b) 0.5 (c) 0.032 (d) 0.445
  34. 34.What is the value of the digit 2 in 94.632? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  35. 35.What is the value of the digit 9 in 56.943? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9
  36. 36.What is the value of the digit 4 in 73.864? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  37. 37.What is the value of the digit 9 in 58.964? (a) 9 (b) 0.09 (c) 0.009 (d) 0.9
  38. 38.9.06 + 9.3 = ? (a) 18.46 (b) 18.36 (c) 18.26 (d) 9.99
  39. 39.Which is the greatest: 0.298, 0.35, 0.029, 0.3? (a) 0.298 (b) 0.35 (c) 0.029 (d) 0.3
  40. 40.What is the value of the digit 6 in 62.317? (a) 0.6 (b) 60 (c) 6 (d) 0.06

Answer key

  1. 12.14
  2. 11.03
  3. 0.54
  4. 5.18
  5. 0.52
  6. 5.81
  7. 17.72
  8. 11.14
  9. 7.48
  10. 0.012
  11. 0.052
  12. 8.28
  13. 0.04
  14. 0.1
  15. 14.48
  16. 0.092
  17. 18.16
  18. 0.48
  19. 6.35
  20. 0.55
  21. 11.95
  22. 0.006
  23. 0.49
  24. 2
  25. 12.31
  26. 12.61
  27. 0.3
  28. 0.59
  29. 10.72
  30. 0.085
  31. 3
  32. 0.008
  33. 0.51
  34. 0.002
  35. 0.9
  36. 0.004
  37. 0.9
  38. 18.36
  39. 0.35
  40. 60

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