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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 61 · 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. 1.5.81 + 9.1 = ? (a) 15.01 (b) 14.81 (c) 6.72 (d) 14.91
  2. 2.9.41 + 7.4 = ? (a) 16.81 (b) 16.91 (c) 16.71 (d) 10.15
  3. 3.What is the value of the digit 3 in 53.978? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  4. 4.3.79 + 1.3 = ? (a) 5.19 (b) 5.09 (c) 4.99 (d) 3.92
  5. 5.What is the value of the digit 1 in 31.867? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  6. 6.What is the value of the digit 7 in 38.617? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  7. 7.8.63 + 3.5 = ? (a) 12.13 (b) 12.03 (c) 8.98 (d) 12.23
  8. 8.What is the value of the digit 4 in 29.548? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  9. 9.3.61 + 9.1 = ? (a) 12.71 (b) 12.81 (c) 12.61 (d) 4.52
  10. 10.2.51 + 4.5 = ? (a) 2.96 (b) 7.11 (c) 7.01 (d) 6.91
  11. 11.What is the value of the digit 6 in 15.468? (a) 6 (b) 0.6 (c) 0.06 (d) 0.006
  12. 12.What is the value of the digit 7 in 79.138? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  13. 13.What is the value of the digit 8 in 84.961? (a) 8 (b) 0.08 (c) 0.8 (d) 80
  14. 14.2.71 + 2.6 = ? (a) 5.31 (b) 5.41 (c) 2.97 (d) 5.21
  15. 15.What is the value of the digit 2 in 26.489? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  16. 16.Which is the greatest: 0.731, 0.069, 0.8, 0.84? (a) 0.731 (b) 0.069 (c) 0.8 (d) 0.84
  17. 17.What is the value of the digit 1 in 45.691? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  18. 18.3.79 + 5.6 = ? (a) 9.29 (b) 9.49 (c) 4.35 (d) 9.39
  19. 19.What is the value of the digit 7 in 24.697? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  20. 20.Which is the greatest: 0.198, 0.25, 0.012, 0.2? (a) 0.198 (b) 0.25 (c) 0.012 (d) 0.2
  21. 21.What is the value of the digit 3 in 64.923? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  22. 22.2.71 + 5.2 = ? (a) 3.23 (b) 7.91 (c) 7.81 (d) 8.01
  23. 23.8.48 + 4.1 = ? (a) 12.48 (b) 8.89 (c) 12.68 (d) 12.58
  24. 24.What is the value of the digit 2 in 65.129? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  25. 25.Which is the greatest: 0.2, 0.188, 0.011, 0.21? (a) 0.2 (b) 0.188 (c) 0.011 (d) 0.21
  26. 26.Which is the greatest: 0.22, 0.052, 0.123, 0.2? (a) 0.22 (b) 0.052 (c) 0.123 (d) 0.2
  27. 27.What is the value of the digit 6 in 86.751? (a) 0.06 (b) 0.6 (c) 60 (d) 6
  28. 28.2.79 + 2.9 = ? (a) 5.59 (b) 5.69 (c) 3.08 (d) 5.79
  29. 29.Which is the greatest: 0.664, 0.7, 0.037, 0.77? (a) 0.664 (b) 0.7 (c) 0.037 (d) 0.77
  30. 30.4.93 + 9.5 = ? (a) 14.53 (b) 14.43 (c) 14.33 (d) 5.88
  31. 31.Which is the smallest: 0.2, 0.113, 0.26, 0.019? (a) 0.2 (b) 0.113 (c) 0.26 (d) 0.019
  32. 32.7.62 + 5.3 = ? (a) 12.82 (b) 12.92 (c) 13.02 (d) 8.15
  33. 33.Which is the greatest: 0.067, 0.441, 0.5, 0.57? (a) 0.067 (b) 0.441 (c) 0.5 (d) 0.57
  34. 34.1.01 + 6.4 = ? (a) 1.65 (b) 7.31 (c) 7.51 (d) 7.41
  35. 35.What is the value of the digit 1 in 26.719? (a) 0.001 (b) 1 (c) 0.01 (d) 0.1
  36. 36.What is the value of the digit 1 in 24.186? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  37. 37.Which is the greatest: 0.722, 0.88, 0.093, 0.8? (a) 0.722 (b) 0.88 (c) 0.093 (d) 0.8
  38. 38.What is the value of the digit 8 in 68.132? (a) 0.8 (b) 80 (c) 8 (d) 0.08
  39. 39.Which is the greatest: 0.48, 0.4, 0.316, 0.013? (a) 0.48 (b) 0.4 (c) 0.316 (d) 0.013
  40. 40.Which is the greatest: 0.061, 0.587, 0.61, 0.6? (a) 0.061 (b) 0.587 (c) 0.61 (d) 0.6

Answer key

  1. 14.91
  2. 16.81
  3. 3
  4. 5.09
  5. 1
  6. 0.007
  7. 12.13
  8. 0.04
  9. 12.71
  10. 7.01
  11. 0.06
  12. 70
  13. 80
  14. 5.31
  15. 20
  16. 0.84
  17. 0.001
  18. 9.39
  19. 0.007
  20. 0.25
  21. 0.003
  22. 7.91
  23. 12.58
  24. 0.02
  25. 0.21
  26. 0.22
  27. 6
  28. 5.69
  29. 0.77
  30. 14.43
  31. 0.019
  32. 12.92
  33. 0.57
  34. 7.41
  35. 0.01
  36. 0.1
  37. 0.88
  38. 8
  39. 0.48
  40. 0.61

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