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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 14 · 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. 1.9.27 + 7.2 = ? (a) 16.47 (b) 9.99 (c) 16.57 (d) 16.37
  2. 2.Which is the smallest: 0.32, 0.3, 0.259, 0.038? (a) 0.32 (b) 0.3 (c) 0.259 (d) 0.038
  3. 3.9.01 + 1.8 = ? (a) 10.91 (b) 9.19 (c) 10.81 (d) 10.71
  4. 4.Which is the smallest: 0.5, 0.032, 0.414, 0.51? (a) 0.5 (b) 0.032 (c) 0.414 (d) 0.51
  5. 5.3.17 + 3.4 = ? (a) 6.67 (b) 3.51 (c) 6.47 (d) 6.57
  6. 6.3.33 + 3.1 = ? (a) 3.64 (b) 6.53 (c) 6.33 (d) 6.43
  7. 7.Which is the smallest: 0.785, 0.8, 0.84, 0.016? (a) 0.785 (b) 0.8 (c) 0.84 (d) 0.016
  8. 8.Which is the greatest: 0.61, 0.555, 0.6, 0.024? (a) 0.61 (b) 0.555 (c) 0.6 (d) 0.024
  9. 9.What is the value of the digit 1 in 47.813? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  10. 10.2.31 + 2.6 = ? (a) 2.57 (b) 5.01 (c) 4.81 (d) 4.91
  11. 11.3.57 + 2.7 = ? (a) 6.37 (b) 6.27 (c) 6.17 (d) 3.84
  12. 12.2.48 + 3.8 = ? (a) 6.28 (b) 6.38 (c) 2.86 (d) 6.18
  13. 13.What is the value of the digit 6 in 63.852? (a) 0.06 (b) 6 (c) 60 (d) 0.6
  14. 14.2.99 + 1.3 = ? (a) 4.39 (b) 4.29 (c) 4.19 (d) 3.12
  15. 15.8.16 + 4.6 = ? (a) 12.86 (b) 12.66 (c) 8.62 (d) 12.76
  16. 16.Which is the smallest: 0.4, 0.47, 0.096, 0.322? (a) 0.4 (b) 0.47 (c) 0.096 (d) 0.322
  17. 17.What is the value of the digit 2 in 69.253? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  18. 18.What is the value of the digit 8 in 32.987? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  19. 19.9.66 + 9.8 = ? (a) 19.36 (b) 19.46 (c) 19.56 (d) 10.64
  20. 20.What is the value of the digit 6 in 51.762? (a) 0.6 (b) 6 (c) 0.006 (d) 0.06
  21. 21.4.98 + 4.5 = ? (a) 9.48 (b) 5.43 (c) 9.38 (d) 9.58
  22. 22.Which is the greatest: 0.332, 0.47, 0.4, 0.013? (a) 0.332 (b) 0.47 (c) 0.4 (d) 0.013
  23. 23.Which is the smallest: 0.443, 0.54, 0.5, 0.072? (a) 0.443 (b) 0.54 (c) 0.5 (d) 0.072
  24. 24.What is the value of the digit 6 in 34.216? (a) 0.6 (b) 6 (c) 0.06 (d) 0.006
  25. 25.What is the value of the digit 5 in 85.391? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  26. 26.2.22 + 9.9 = ? (a) 3.21 (b) 12.22 (c) 12.12 (d) 12.02
  27. 27.What is the value of the digit 6 in 63.487? (a) 60 (b) 0.06 (c) 6 (d) 0.6
  28. 28.Which is the smallest: 0.7, 0.055, 0.615, 0.71? (a) 0.7 (b) 0.055 (c) 0.615 (d) 0.71
  29. 29.4.89 + 8.4 = ? (a) 5.73 (b) 13.19 (c) 13.39 (d) 13.29
  30. 30.9.11 + 1.8 = ? (a) 10.91 (b) 10.81 (c) 9.29 (d) 11.01
  31. 31.What is the value of the digit 4 in 68.457? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  32. 32.Which is the greatest: 0.095, 0.313, 0.46, 0.4? (a) 0.095 (b) 0.313 (c) 0.46 (d) 0.4
  33. 33.6.51 + 1.2 = ? (a) 7.71 (b) 7.81 (c) 7.61 (d) 6.63
  34. 34.What is the value of the digit 7 in 17.628? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  35. 35.Which is the smallest: 0.4, 0.094, 0.43, 0.335? (a) 0.4 (b) 0.094 (c) 0.43 (d) 0.335
  36. 36.6.47 + 7.1 = ? (a) 13.57 (b) 13.47 (c) 13.67 (d) 7.18
  37. 37.3.36 + 2.1 = ? (a) 3.57 (b) 5.36 (c) 5.46 (d) 5.56
  38. 38.What is the value of the digit 4 in 24.851? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  39. 39.3.93 + 7.4 = ? (a) 4.67 (b) 11.33 (c) 11.23 (d) 11.43
  40. 40.What is the value of the digit 2 in 16.254? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2

Answer key

  1. 16.47
  2. 0.038
  3. 10.81
  4. 0.032
  5. 6.57
  6. 6.43
  7. 0.016
  8. 0.61
  9. 0.01
  10. 4.91
  11. 6.27
  12. 6.28
  13. 60
  14. 4.29
  15. 12.76
  16. 0.096
  17. 0.2
  18. 0.08
  19. 19.46
  20. 0.06
  21. 9.48
  22. 0.47
  23. 0.072
  24. 0.006
  25. 5
  26. 12.12
  27. 60
  28. 0.055
  29. 13.29
  30. 10.91
  31. 0.4
  32. 0.46
  33. 7.71
  34. 7
  35. 0.094
  36. 13.57
  37. 5.46
  38. 4
  39. 11.33
  40. 0.2

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