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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 814 · 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. 1.8.01 + 5.5 = ? (a) 8.56 (b) 13.51 (c) 13.41 (d) 13.61
  2. 2.Which is the greatest: 0.267, 0.022, 0.3, 0.38? (a) 0.267 (b) 0.022 (c) 0.3 (d) 0.38
  3. 3.7.52 + 6.7 = ? (a) 14.32 (b) 14.22 (c) 8.19 (d) 14.12
  4. 4.What is the value of the digit 3 in 83.612? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  5. 5.What is the value of the digit 6 in 16.794? (a) 0.6 (b) 60 (c) 0.06 (d) 6
  6. 6.Which is the greatest: 0.2, 0.087, 0.117, 0.23? (a) 0.2 (b) 0.087 (c) 0.117 (d) 0.23
  7. 7.1.63 + 6.1 = ? (a) 7.83 (b) 2.24 (c) 7.63 (d) 7.73
  8. 8.Which is the smallest: 0.068, 0.228, 0.38, 0.3? (a) 0.068 (b) 0.228 (c) 0.38 (d) 0.3
  9. 9.Which is the greatest: 0.043, 0.62, 0.519, 0.6? (a) 0.043 (b) 0.62 (c) 0.519 (d) 0.6
  10. 10.Which is the smallest: 0.795, 0.091, 0.8, 0.88? (a) 0.795 (b) 0.091 (c) 0.8 (d) 0.88
  11. 11.Which is the smallest: 0.274, 0.3, 0.37, 0.061? (a) 0.274 (b) 0.3 (c) 0.37 (d) 0.061
  12. 12.1.21 + 3.4 = ? (a) 4.71 (b) 1.55 (c) 4.51 (d) 4.61
  13. 13.What is the value of the digit 7 in 71.549? (a) 0.7 (b) 7 (c) 0.07 (d) 70
  14. 14.Which is the smallest: 0.6, 0.573, 0.088, 0.67? (a) 0.6 (b) 0.573 (c) 0.088 (d) 0.67
  15. 15.Which is the greatest: 0.462, 0.072, 0.53, 0.5? (a) 0.462 (b) 0.072 (c) 0.53 (d) 0.5
  16. 16.7.55 + 5.7 = ? (a) 13.35 (b) 13.15 (c) 13.25 (d) 8.12
  17. 17.What is the value of the digit 5 in 78.235? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  18. 18.5.74 + 8.1 = ? (a) 13.84 (b) 13.74 (c) 13.94 (d) 6.55
  19. 19.7.54 + 8.8 = ? (a) 16.34 (b) 16.24 (c) 16.44 (d) 8.42
  20. 20.What is the value of the digit 7 in 21.879? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  21. 21.Which is the greatest: 0.223, 0.3, 0.067, 0.31? (a) 0.223 (b) 0.3 (c) 0.067 (d) 0.31
  22. 22.What is the value of the digit 5 in 21.574? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  23. 23.8.59 + 6.3 = ? (a) 9.22 (b) 14.99 (c) 14.79 (d) 14.89
  24. 24.What is the value of the digit 1 in 41.859? (a) 1 (b) 10 (c) 0.01 (d) 0.1
  25. 25.Which is the greatest: 0.45, 0.4, 0.028, 0.329? (a) 0.45 (b) 0.4 (c) 0.028 (d) 0.329
  26. 26.Which is the smallest: 0.41, 0.4, 0.313, 0.071? (a) 0.41 (b) 0.4 (c) 0.313 (d) 0.071
  27. 27.3.71 + 8.4 = ? (a) 4.55 (b) 12.21 (c) 12.01 (d) 12.11
  28. 28.What is the value of the digit 7 in 56.972? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  29. 29.Which is the smallest: 0.431, 0.53, 0.011, 0.5? (a) 0.431 (b) 0.53 (c) 0.011 (d) 0.5
  30. 30.7.51 + 5.1 = ? (a) 12.71 (b) 12.51 (c) 12.61 (d) 8.02
  31. 31.Which is the greatest: 0.52, 0.026, 0.5, 0.453? (a) 0.52 (b) 0.026 (c) 0.5 (d) 0.453
  32. 32.Which is the greatest: 0.483, 0.57, 0.5, 0.024? (a) 0.483 (b) 0.57 (c) 0.5 (d) 0.024
  33. 33.Which is the greatest: 0.135, 0.2, 0.21, 0.016? (a) 0.135 (b) 0.2 (c) 0.21 (d) 0.016
  34. 34.5.76 + 9.4 = ? (a) 15.26 (b) 15.06 (c) 15.16 (d) 6.7
  35. 35.What is the value of the digit 1 in 91.472? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  36. 36.Which is the greatest: 0.48, 0.365, 0.081, 0.4? (a) 0.48 (b) 0.365 (c) 0.081 (d) 0.4
  37. 37.What is the value of the digit 2 in 52.987? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  38. 38.What is the value of the digit 7 in 67.124? (a) 0.07 (b) 7 (c) 70 (d) 0.7
  39. 39.2.77 + 7.4 = ? (a) 10.27 (b) 10.17 (c) 3.51 (d) 10.07
  40. 40.3.69 + 4.2 = ? (a) 7.79 (b) 7.89 (c) 7.99 (d) 4.11

Answer key

  1. 13.51
  2. 0.38
  3. 14.22
  4. 3
  5. 6
  6. 0.23
  7. 7.73
  8. 0.068
  9. 0.62
  10. 0.091
  11. 0.061
  12. 4.61
  13. 70
  14. 0.088
  15. 0.53
  16. 13.25
  17. 0.005
  18. 13.84
  19. 16.34
  20. 0.07
  21. 0.31
  22. 0.5
  23. 14.89
  24. 1
  25. 0.45
  26. 0.071
  27. 12.11
  28. 0.07
  29. 0.011
  30. 12.61
  31. 0.52
  32. 0.57
  33. 0.21
  34. 15.16
  35. 1
  36. 0.48
  37. 2
  38. 7
  39. 10.17
  40. 7.89

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