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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 825 · 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. 1.3.61 + 2.9 = ? (a) 3.9 (b) 6.41 (c) 6.61 (d) 6.51
  2. 2.Which is the greatest: 0.015, 0.82, 0.726, 0.8? (a) 0.015 (b) 0.82 (c) 0.726 (d) 0.8
  3. 3.5.54 + 2.2 = ? (a) 5.76 (b) 7.84 (c) 7.74 (d) 7.64
  4. 4.What is the value of the digit 5 in 15.289? (a) 0.05 (b) 5 (c) 50 (d) 0.5
  5. 5.What is the value of the digit 3 in 24.753? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  6. 6.What is the value of the digit 4 in 73.489? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  7. 7.2.37 + 4.7 = ? (a) 2.84 (b) 6.97 (c) 7.17 (d) 7.07
  8. 8.4.41 + 1.5 = ? (a) 5.91 (b) 6.01 (c) 5.81 (d) 4.56
  9. 9.Which is the smallest: 0.622, 0.018, 0.79, 0.7? (a) 0.622 (b) 0.018 (c) 0.79 (d) 0.7
  10. 10.Which is the greatest: 0.75, 0.679, 0.025, 0.7? (a) 0.75 (b) 0.679 (c) 0.025 (d) 0.7
  11. 11.9.03 + 7.9 = ? (a) 17.03 (b) 16.93 (c) 9.82 (d) 16.83
  12. 12.9.13 + 2.4 = ? (a) 9.37 (b) 11.53 (c) 11.63 (d) 11.43
  13. 13.1.02 + 7.7 = ? (a) 8.72 (b) 1.79 (c) 8.82 (d) 8.62
  14. 14.What is the value of the digit 9 in 36.195? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  15. 15.5.93 + 6.2 = ? (a) 12.03 (b) 12.13 (c) 12.23 (d) 6.55
  16. 16.Which is the smallest: 0.43, 0.4, 0.033, 0.347? (a) 0.43 (b) 0.4 (c) 0.033 (d) 0.347
  17. 17.What is the value of the digit 1 in 36.187? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  18. 18.What is the value of the digit 7 in 13.275? (a) 7 (b) 0.007 (c) 0.7 (d) 0.07
  19. 19.7.57 + 6.1 = ? (a) 13.77 (b) 13.57 (c) 8.18 (d) 13.67
  20. 20.What is the value of the digit 3 in 36.185? (a) 0.3 (b) 30 (c) 3 (d) 0.03
  21. 21.1.68 + 4.2 = ? (a) 5.98 (b) 2.1 (c) 5.78 (d) 5.88
  22. 22.What is the value of the digit 8 in 18.635? (a) 80 (b) 8 (c) 0.8 (d) 0.08
  23. 23.Which is the greatest: 0.119, 0.25, 0.035, 0.2? (a) 0.119 (b) 0.25 (c) 0.035 (d) 0.2
  24. 24.Which is the greatest: 0.656, 0.7, 0.75, 0.074? (a) 0.656 (b) 0.7 (c) 0.75 (d) 0.074
  25. 25.4.44 + 5.1 = ? (a) 9.64 (b) 9.54 (c) 4.95 (d) 9.44
  26. 26.What is the value of the digit 3 in 83.471? (a) 3 (b) 0.03 (c) 30 (d) 0.3
  27. 27.What is the value of the digit 8 in 48.672? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  28. 28.4.41 + 6.8 = ? (a) 11.21 (b) 5.09 (c) 11.11 (d) 11.31
  29. 29.Which is the greatest: 0.8, 0.092, 0.722, 0.86? (a) 0.8 (b) 0.092 (c) 0.722 (d) 0.86
  30. 30.What is the value of the digit 1 in 42.193? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  31. 31.What is the value of the digit 8 in 89.351? (a) 0.8 (b) 0.08 (c) 8 (d) 80
  32. 32.1.55 + 6.4 = ? (a) 8.05 (b) 7.85 (c) 2.19 (d) 7.95
  33. 33.4.11 + 1.4 = ? (a) 4.25 (b) 5.51 (c) 5.41 (d) 5.61
  34. 34.Which is the greatest: 0.86, 0.077, 0.8, 0.769? (a) 0.86 (b) 0.077 (c) 0.8 (d) 0.769
  35. 35.Which is the smallest: 0.3, 0.041, 0.213, 0.39? (a) 0.3 (b) 0.041 (c) 0.213 (d) 0.39
  36. 36.What is the value of the digit 9 in 12.349? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  37. 37.Which is the greatest: 0.26, 0.2, 0.118, 0.014? (a) 0.26 (b) 0.2 (c) 0.118 (d) 0.014
  38. 38.4.87 + 2.5 = ? (a) 7.47 (b) 5.12 (c) 7.27 (d) 7.37
  39. 39.4.95 + 3.8 = ? (a) 5.33 (b) 8.85 (c) 8.65 (d) 8.75
  40. 40.5.18 + 9.4 = ? (a) 14.48 (b) 14.68 (c) 14.58 (d) 6.12

Answer key

  1. 6.51
  2. 0.82
  3. 7.74
  4. 5
  5. 0.003
  6. 0.4
  7. 7.07
  8. 5.91
  9. 0.018
  10. 0.75
  11. 16.93
  12. 11.53
  13. 8.72
  14. 0.09
  15. 12.13
  16. 0.033
  17. 0.1
  18. 0.07
  19. 13.67
  20. 30
  21. 5.88
  22. 8
  23. 0.25
  24. 0.75
  25. 9.54
  26. 3
  27. 8
  28. 11.21
  29. 0.86
  30. 0.1
  31. 80
  32. 7.95
  33. 5.51
  34. 0.86
  35. 0.041
  36. 0.009
  37. 0.26
  38. 7.37
  39. 8.75
  40. 14.58

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