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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 454 · 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. 1.3.17 + 5.5 = ? (a) 8.67 (b) 8.57 (c) 3.72 (d) 8.77
  2. 2.Which is the smallest: 0.41, 0.045, 0.4, 0.387? (a) 0.41 (b) 0.045 (c) 0.4 (d) 0.387
  3. 3.2.81 + 9.5 = ? (a) 12.41 (b) 3.76 (c) 12.21 (d) 12.31
  4. 4.What is the value of the digit 1 in 51.239? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  5. 5.What is the value of the digit 9 in 36.895? (a) 0.9 (b) 0.09 (c) 0.009 (d) 9
  6. 6.Which is the smallest: 0.75, 0.061, 0.7, 0.649? (a) 0.75 (b) 0.061 (c) 0.7 (d) 0.649
  7. 7.Which is the greatest: 0.46, 0.4, 0.014, 0.356? (a) 0.46 (b) 0.4 (c) 0.014 (d) 0.356
  8. 8.What is the value of the digit 4 in 63.478? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  9. 9.Which is the smallest: 0.64, 0.6, 0.581, 0.038? (a) 0.64 (b) 0.6 (c) 0.581 (d) 0.038
  10. 10.Which is the smallest: 0.155, 0.2, 0.081, 0.29? (a) 0.155 (b) 0.2 (c) 0.081 (d) 0.29
  11. 11.What is the value of the digit 3 in 79.143? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  12. 12.What is the value of the digit 6 in 68.129? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  13. 13.3.52 + 1.2 = ? (a) 3.64 (b) 4.82 (c) 4.62 (d) 4.72
  14. 14.1.31 + 8.1 = ? (a) 9.51 (b) 9.31 (c) 9.41 (d) 2.12
  15. 15.What is the value of the digit 1 in 51.279? (a) 1 (b) 10 (c) 0.1 (d) 0.01
  16. 16.3.08 + 6.8 = ? (a) 9.98 (b) 9.88 (c) 3.76 (d) 9.78
  17. 17.Which is the greatest: 0.099, 0.42, 0.4, 0.329? (a) 0.099 (b) 0.42 (c) 0.4 (d) 0.329
  18. 18.What is the value of the digit 3 in 64.853? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  19. 19.Which is the greatest: 0.041, 0.5, 0.52, 0.463? (a) 0.041 (b) 0.5 (c) 0.52 (d) 0.463
  20. 20.What is the value of the digit 3 in 81.693? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  21. 21.2.81 + 2.4 = ? (a) 5.31 (b) 3.05 (c) 5.21 (d) 5.11
  22. 22.What is the value of the digit 8 in 82.613? (a) 8 (b) 0.08 (c) 80 (d) 0.8
  23. 23.What is the value of the digit 7 in 23.679? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  24. 24.Which is the greatest: 0.388, 0.46, 0.4, 0.016? (a) 0.388 (b) 0.46 (c) 0.4 (d) 0.016
  25. 25.2.04 + 2.3 = ? (a) 4.34 (b) 2.27 (c) 4.44 (d) 4.24
  26. 26.9.29 + 4.8 = ? (a) 14.19 (b) 13.99 (c) 9.77 (d) 14.09
  27. 27.3.83 + 5.1 = ? (a) 8.83 (b) 4.34 (c) 8.93 (d) 9.03
  28. 28.What is the value of the digit 8 in 43.968? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  29. 29.8.61 + 3.4 = ? (a) 12.11 (b) 12.01 (c) 11.91 (d) 8.95
  30. 30.What is the value of the digit 7 in 14.276? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  31. 31.What is the value of the digit 4 in 82.174? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  32. 32.7.45 + 5.4 = ? (a) 12.75 (b) 12.85 (c) 12.95 (d) 7.99
  33. 33.9.29 + 7.4 = ? (a) 10.03 (b) 16.59 (c) 16.79 (d) 16.69
  34. 34.8.06 + 7.7 = ? (a) 15.66 (b) 15.76 (c) 8.83 (d) 15.86
  35. 35.Which is the smallest: 0.34, 0.3, 0.081, 0.299? (a) 0.34 (b) 0.3 (c) 0.081 (d) 0.299
  36. 36.Which is the smallest: 0.082, 0.31, 0.217, 0.3? (a) 0.082 (b) 0.31 (c) 0.217 (d) 0.3
  37. 37.Which is the smallest: 0.366, 0.032, 0.43, 0.4? (a) 0.366 (b) 0.032 (c) 0.43 (d) 0.4
  38. 38.What is the value of the digit 5 in 52.813? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  39. 39.6.76 + 2.6 = ? (a) 9.46 (b) 9.36 (c) 9.26 (d) 7.02
  40. 40.Which is the greatest: 0.091, 0.41, 0.4, 0.357? (a) 0.091 (b) 0.41 (c) 0.4 (d) 0.357

Answer key

  1. 8.67
  2. 0.045
  3. 12.31
  4. 1
  5. 0.09
  6. 0.061
  7. 0.46
  8. 0.4
  9. 0.038
  10. 0.081
  11. 0.003
  12. 60
  13. 4.72
  14. 9.41
  15. 1
  16. 9.88
  17. 0.42
  18. 0.003
  19. 0.52
  20. 0.003
  21. 5.21
  22. 80
  23. 0.07
  24. 0.46
  25. 4.34
  26. 14.09
  27. 8.93
  28. 0.008
  29. 12.01
  30. 0.07
  31. 0.004
  32. 12.85
  33. 16.69
  34. 15.76
  35. 0.081
  36. 0.082
  37. 0.032
  38. 50
  39. 9.36
  40. 0.41

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