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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 146 · 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. 1.2.21 + 9.6 = ? (a) 11.71 (b) 11.91 (c) 3.17 (d) 11.81
  2. 2.8.98 + 6.3 = ? (a) 15.18 (b) 15.38 (c) 15.28 (d) 9.61
  3. 3.5.12 + 9.7 = ? (a) 14.72 (b) 14.92 (c) 14.82 (d) 6.09
  4. 4.4.61 + 8.7 = ? (a) 13.31 (b) 13.41 (c) 5.48 (d) 13.21
  5. 5.What is the value of the digit 3 in 23.945? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  6. 6.Which is the greatest: 0.2, 0.049, 0.132, 0.28? (a) 0.2 (b) 0.049 (c) 0.132 (d) 0.28
  7. 7.What is the value of the digit 3 in 63.914? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  8. 8.Which is the smallest: 0.041, 0.349, 0.4, 0.46? (a) 0.041 (b) 0.349 (c) 0.4 (d) 0.46
  9. 9.Which is the greatest: 0.48, 0.375, 0.4, 0.093? (a) 0.48 (b) 0.375 (c) 0.4 (d) 0.093
  10. 10.9.02 + 4.5 = ? (a) 13.42 (b) 13.52 (c) 13.62 (d) 9.47
  11. 11.What is the value of the digit 5 in 53.926? (a) 50 (b) 5 (c) 0.05 (d) 0.5
  12. 12.What is the value of the digit 2 in 21.436? (a) 2 (b) 0.2 (c) 0.02 (d) 20
  13. 13.1.73 + 9.8 = ? (a) 11.63 (b) 2.71 (c) 11.53 (d) 11.43
  14. 14.What is the value of the digit 1 in 64.321? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  15. 15.1.09 + 9.1 = ? (a) 10.09 (b) 10.29 (c) 2 (d) 10.19
  16. 16.6.08 + 3.2 = ? (a) 9.28 (b) 9.18 (c) 9.38 (d) 6.4
  17. 17.Which is the greatest: 0.092, 0.626, 0.7, 0.73? (a) 0.092 (b) 0.626 (c) 0.7 (d) 0.73
  18. 18.What is the value of the digit 2 in 36.249? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  19. 19.9.62 + 3.3 = ? (a) 12.82 (b) 12.92 (c) 13.02 (d) 9.95
  20. 20.5.82 + 6.2 = ? (a) 6.44 (b) 12.12 (c) 12.02 (d) 11.92
  21. 21.What is the value of the digit 1 in 72.316? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  22. 22.9.31 + 2.6 = ? (a) 12.01 (b) 9.57 (c) 11.81 (d) 11.91
  23. 23.9.78 + 5.7 = ? (a) 15.38 (b) 15.48 (c) 10.35 (d) 15.58
  24. 24.4.01 + 9.1 = ? (a) 13.21 (b) 4.92 (c) 13.01 (d) 13.11
  25. 25.What is the value of the digit 7 in 26.739? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  26. 26.Which is the greatest: 0.077, 0.4, 0.322, 0.49? (a) 0.077 (b) 0.4 (c) 0.322 (d) 0.49
  27. 27.What is the value of the digit 9 in 89.725? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  28. 28.1.11 + 6.1 = ? (a) 7.21 (b) 7.11 (c) 1.72 (d) 7.31
  29. 29.What is the value of the digit 9 in 19.523? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  30. 30.Which is the greatest: 0.313, 0.068, 0.42, 0.4? (a) 0.313 (b) 0.068 (c) 0.42 (d) 0.4
  31. 31.Which is the smallest: 0.6, 0.63, 0.535, 0.031? (a) 0.6 (b) 0.63 (c) 0.535 (d) 0.031
  32. 32.8.27 + 9.8 = ? (a) 18.17 (b) 17.97 (c) 9.25 (d) 18.07
  33. 33.7.21 + 8.9 = ? (a) 16.01 (b) 16.21 (c) 8.1 (d) 16.11
  34. 34.9.79 + 6.3 = ? (a) 16.19 (b) 15.99 (c) 10.42 (d) 16.09
  35. 35.5.01 + 6.7 = ? (a) 11.81 (b) 11.61 (c) 5.68 (d) 11.71
  36. 36.What is the value of the digit 6 in 46.138? (a) 0.06 (b) 6 (c) 0.6 (d) 60
  37. 37.7.64 + 8.6 = ? (a) 16.34 (b) 16.24 (c) 8.5 (d) 16.14
  38. 38.1.99 + 6.4 = ? (a) 2.63 (b) 8.49 (c) 8.39 (d) 8.29
  39. 39.What is the value of the digit 7 in 98.571? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  40. 40.Which is the greatest: 0.65, 0.069, 0.6, 0.514? (a) 0.65 (b) 0.069 (c) 0.6 (d) 0.514

Answer key

  1. 11.81
  2. 15.28
  3. 14.82
  4. 13.31
  5. 3
  6. 0.28
  7. 3
  8. 0.041
  9. 0.48
  10. 13.52
  11. 50
  12. 20
  13. 11.53
  14. 0.001
  15. 10.19
  16. 9.28
  17. 0.73
  18. 0.2
  19. 12.92
  20. 12.02
  21. 0.01
  22. 11.91
  23. 15.48
  24. 13.11
  25. 0.7
  26. 0.49
  27. 9
  28. 7.21
  29. 9
  30. 0.42
  31. 0.031
  32. 18.07
  33. 16.11
  34. 16.09
  35. 11.71
  36. 6
  37. 16.24
  38. 8.39
  39. 0.07
  40. 0.65

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