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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 43 · 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. 1.2.47 + 9.9 = ? (a) 12.47 (b) 12.27 (c) 12.37 (d) 3.46
  2. 2.3.37 + 3.1 = ? (a) 6.57 (b) 3.68 (c) 6.47 (d) 6.37
  3. 3.What is the value of the digit 2 in 12.638? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  4. 4.Which is the smallest: 0.86, 0.042, 0.789, 0.8? (a) 0.86 (b) 0.042 (c) 0.789 (d) 0.8
  5. 5.What is the value of the digit 8 in 61.852? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  6. 6.5.22 + 2.9 = ? (a) 8.22 (b) 5.51 (c) 8.12 (d) 8.02
  7. 7.4.51 + 2.1 = ? (a) 6.71 (b) 6.51 (c) 6.61 (d) 4.72
  8. 8.7.66 + 3.5 = ? (a) 8.01 (b) 11.06 (c) 11.26 (d) 11.16
  9. 9.What is the value of the digit 1 in 42.381? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  10. 10.1.06 + 2.1 = ? (a) 3.26 (b) 3.16 (c) 3.06 (d) 1.27
  11. 11.What is the value of the digit 6 in 53.216? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  12. 12.8.36 + 4.1 = ? (a) 12.56 (b) 8.77 (c) 12.46 (d) 12.36
  13. 13.Which is the smallest: 0.074, 0.65, 0.6, 0.562? (a) 0.074 (b) 0.65 (c) 0.6 (d) 0.562
  14. 14.2.21 + 3.8 = ? (a) 5.91 (b) 6.11 (c) 6.01 (d) 2.59
  15. 15.What is the value of the digit 1 in 91.834? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  16. 16.6.18 + 8.8 = ? (a) 14.98 (b) 15.08 (c) 14.88 (d) 7.06
  17. 17.Which is the greatest: 0.4, 0.011, 0.376, 0.41? (a) 0.4 (b) 0.011 (c) 0.376 (d) 0.41
  18. 18.What is the value of the digit 1 in 63.182? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  19. 19.Which is the greatest: 0.749, 0.89, 0.015, 0.8? (a) 0.749 (b) 0.89 (c) 0.015 (d) 0.8
  20. 20.Which is the greatest: 0.051, 0.6, 0.64, 0.526? (a) 0.051 (b) 0.6 (c) 0.64 (d) 0.526
  21. 21.What is the value of the digit 7 in 17.369? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  22. 22.What is the value of the digit 3 in 36.194? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  23. 23.5.82 + 7.9 = ? (a) 13.82 (b) 13.72 (c) 6.61 (d) 13.62
  24. 24.3.57 + 9.1 = ? (a) 4.48 (b) 12.67 (c) 12.57 (d) 12.77
  25. 25.Which is the greatest: 0.787, 0.8, 0.017, 0.84? (a) 0.787 (b) 0.8 (c) 0.017 (d) 0.84
  26. 26.What is the value of the digit 2 in 72.841? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  27. 27.What is the value of the digit 2 in 75.296? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  28. 28.What is the value of the digit 5 in 68.542? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  29. 29.What is the value of the digit 5 in 56.198? (a) 0.5 (b) 0.05 (c) 50 (d) 5
  30. 30.Which is the smallest: 0.325, 0.052, 0.4, 0.45? (a) 0.325 (b) 0.052 (c) 0.4 (d) 0.45
  31. 31.4.29 + 6.6 = ? (a) 10.79 (b) 10.99 (c) 4.95 (d) 10.89
  32. 32.6.87 + 2.2 = ? (a) 8.97 (b) 9.07 (c) 7.09 (d) 9.17
  33. 33.3.87 + 4.9 = ? (a) 8.77 (b) 8.67 (c) 8.87 (d) 4.36
  34. 34.What is the value of the digit 5 in 49.135? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  35. 35.What is the value of the digit 8 in 63.827? (a) 8 (b) 0.008 (c) 0.8 (d) 0.08
  36. 36.Which is the smallest: 0.179, 0.025, 0.2, 0.29? (a) 0.179 (b) 0.025 (c) 0.2 (d) 0.29
  37. 37.Which is the smallest: 0.688, 0.78, 0.051, 0.7? (a) 0.688 (b) 0.78 (c) 0.051 (d) 0.7
  38. 38.What is the value of the digit 3 in 39.176? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  39. 39.3.78 + 8.9 = ? (a) 12.78 (b) 4.67 (c) 12.58 (d) 12.68
  40. 40.5.88 + 4.1 = ? (a) 6.29 (b) 9.88 (c) 9.98 (d) 10.08

Answer key

  1. 12.37
  2. 6.47
  3. 2
  4. 0.042
  5. 0.8
  6. 8.12
  7. 6.61
  8. 11.16
  9. 0.001
  10. 3.16
  11. 0.006
  12. 12.46
  13. 0.074
  14. 6.01
  15. 1
  16. 14.98
  17. 0.41
  18. 0.1
  19. 0.89
  20. 0.64
  21. 7
  22. 30
  23. 13.72
  24. 12.67
  25. 0.84
  26. 2
  27. 0.2
  28. 0.5
  29. 50
  30. 0.052
  31. 10.89
  32. 9.07
  33. 8.77
  34. 0.005
  35. 0.8
  36. 0.025
  37. 0.051
  38. 30
  39. 12.68
  40. 9.98

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