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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 633 · 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. 1.2.77 + 3.8 = ? (a) 6.47 (b) 6.67 (c) 3.15 (d) 6.57
  2. 2.2.02 + 3.2 = ? (a) 5.22 (b) 5.32 (c) 5.12 (d) 2.34
  3. 3.What is the value of the digit 3 in 63.485? (a) 30 (b) 0.03 (c) 0.3 (d) 3
  4. 4.2.96 + 2.1 = ? (a) 5.16 (b) 5.06 (c) 4.96 (d) 3.17
  5. 5.What is the value of the digit 3 in 39.158? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  6. 6.What is the value of the digit 1 in 82.173? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  7. 7.Which is the smallest: 0.8, 0.757, 0.082, 0.86? (a) 0.8 (b) 0.757 (c) 0.082 (d) 0.86
  8. 8.5.74 + 6.4 = ? (a) 6.38 (b) 12.24 (c) 12.04 (d) 12.14
  9. 9.What is the value of the digit 4 in 41.253? (a) 0.04 (b) 4 (c) 40 (d) 0.4
  10. 10.7.81 + 8.1 = ? (a) 15.91 (b) 8.62 (c) 15.81 (d) 16.01
  11. 11.What is the value of the digit 8 in 31.478? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  12. 12.Which is the greatest: 0.2, 0.013, 0.23, 0.154? (a) 0.2 (b) 0.013 (c) 0.23 (d) 0.154
  13. 13.Which is the greatest: 0.35, 0.013, 0.3, 0.263? (a) 0.35 (b) 0.013 (c) 0.3 (d) 0.263
  14. 14.Which is the greatest: 0.79, 0.668, 0.071, 0.7? (a) 0.79 (b) 0.668 (c) 0.071 (d) 0.7
  15. 15.What is the value of the digit 2 in 43.821? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  16. 16.7.94 + 5.1 = ? (a) 13.04 (b) 12.94 (c) 13.14 (d) 8.45
  17. 17.What is the value of the digit 7 in 27.481? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  18. 18.4.98 + 3.1 = ? (a) 8.18 (b) 5.29 (c) 7.98 (d) 8.08
  19. 19.Which is the greatest: 0.246, 0.039, 0.35, 0.3? (a) 0.246 (b) 0.039 (c) 0.35 (d) 0.3
  20. 20.What is the value of the digit 5 in 45.671? (a) 50 (b) 0.05 (c) 5 (d) 0.5
  21. 21.What is the value of the digit 4 in 82.349? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  22. 22.3.46 + 5.1 = ? (a) 3.97 (b) 8.46 (c) 8.66 (d) 8.56
  23. 23.1.05 + 4.2 = ? (a) 1.47 (b) 5.15 (c) 5.35 (d) 5.25
  24. 24.What is the value of the digit 1 in 38.615? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  25. 25.8.41 + 3.6 = ? (a) 12.01 (b) 12.11 (c) 8.77 (d) 11.91
  26. 26.6.92 + 9.2 = ? (a) 16.02 (b) 16.22 (c) 16.12 (d) 7.84
  27. 27.What is the value of the digit 2 in 18.723? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  28. 28.What is the value of the digit 1 in 35.218? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  29. 29.Which is the greatest: 0.312, 0.48, 0.4, 0.098? (a) 0.312 (b) 0.48 (c) 0.4 (d) 0.098
  30. 30.What is the value of the digit 7 in 47.293? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  31. 31.1.81 + 5.2 = ? (a) 7.11 (b) 6.91 (c) 7.01 (d) 2.33
  32. 32.Which is the greatest: 0.85, 0.021, 0.8, 0.723? (a) 0.85 (b) 0.021 (c) 0.8 (d) 0.723
  33. 33.What is the value of the digit 8 in 26.978? (a) 0.008 (b) 0.8 (c) 8 (d) 0.08
  34. 34.What is the value of the digit 7 in 21.378? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  35. 35.2.22 + 2.7 = ? (a) 2.49 (b) 4.82 (c) 4.92 (d) 5.02
  36. 36.Which is the greatest: 0.37, 0.088, 0.3, 0.253? (a) 0.37 (b) 0.088 (c) 0.3 (d) 0.253
  37. 37.6.31 + 9.2 = ? (a) 15.61 (b) 15.41 (c) 15.51 (d) 7.23
  38. 38.What is the value of the digit 8 in 83.921? (a) 0.8 (b) 0.08 (c) 8 (d) 80
  39. 39.6.98 + 9.1 = ? (a) 16.18 (b) 16.08 (c) 7.89 (d) 15.98
  40. 40.3.61 + 8.7 = ? (a) 12.41 (b) 12.21 (c) 12.31 (d) 4.48

Answer key

  1. 6.57
  2. 5.22
  3. 3
  4. 5.06
  5. 30
  6. 0.1
  7. 0.082
  8. 12.14
  9. 40
  10. 15.91
  11. 0.008
  12. 0.23
  13. 0.35
  14. 0.79
  15. 0.02
  16. 13.04
  17. 7
  18. 8.08
  19. 0.35
  20. 5
  21. 0.04
  22. 8.56
  23. 5.25
  24. 0.01
  25. 12.01
  26. 16.12
  27. 0.02
  28. 0.01
  29. 0.48
  30. 7
  31. 7.01
  32. 0.85
  33. 0.008
  34. 0.07
  35. 4.92
  36. 0.37
  37. 15.51
  38. 80
  39. 16.08
  40. 12.31

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