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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 722 · 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. 1.2.53 + 1.9 = ? (a) 4.33 (b) 4.43 (c) 4.53 (d) 2.72
  2. 2.2.41 + 6.1 = ? (a) 8.41 (b) 3.02 (c) 8.61 (d) 8.51
  3. 3.5.31 + 5.7 = ? (a) 10.91 (b) 11.01 (c) 11.11 (d) 5.88
  4. 4.Which is the greatest: 0.052, 0.7, 0.671, 0.78? (a) 0.052 (b) 0.7 (c) 0.671 (d) 0.78
  5. 5.9.93 + 6.2 = ? (a) 10.55 (b) 16.23 (c) 16.13 (d) 16.03
  6. 6.Which is the smallest: 0.3, 0.025, 0.286, 0.39? (a) 0.3 (b) 0.025 (c) 0.286 (d) 0.39
  7. 7.6.31 + 9.4 = ? (a) 15.61 (b) 15.71 (c) 7.25 (d) 15.81
  8. 8.Which is the smallest: 0.72, 0.7, 0.092, 0.615? (a) 0.72 (b) 0.7 (c) 0.092 (d) 0.615
  9. 9.1.63 + 9.3 = ? (a) 10.83 (b) 2.56 (c) 10.93 (d) 11.03
  10. 10.What is the value of the digit 2 in 41.532? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  11. 11.7.51 + 5.9 = ? (a) 13.31 (b) 8.1 (c) 13.41 (d) 13.51
  12. 12.9.92 + 9.1 = ? (a) 19.12 (b) 19.02 (c) 18.92 (d) 10.83
  13. 13.1.83 + 8.7 = ? (a) 2.7 (b) 10.63 (c) 10.53 (d) 10.43
  14. 14.What is the value of the digit 6 in 95.614? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  15. 15.What is the value of the digit 7 in 19.327? (a) 0.07 (b) 0.7 (c) 0.007 (d) 7
  16. 16.9.49 + 4.5 = ? (a) 13.99 (b) 14.09 (c) 9.94 (d) 13.89
  17. 17.7.08 + 4.5 = ? (a) 7.53 (b) 11.48 (c) 11.58 (d) 11.68
  18. 18.What is the value of the digit 8 in 82.461? (a) 0.8 (b) 8 (c) 0.08 (d) 80
  19. 19.Which is the smallest: 0.8, 0.87, 0.045, 0.726? (a) 0.8 (b) 0.87 (c) 0.045 (d) 0.726
  20. 20.What is the value of the digit 9 in 23.975? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  21. 21.Which is the greatest: 0.024, 0.5, 0.498, 0.54? (a) 0.024 (b) 0.5 (c) 0.498 (d) 0.54
  22. 22.What is the value of the digit 7 in 15.876? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  23. 23.What is the value of the digit 5 in 27.158? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  24. 24.5.97 + 1.3 = ? (a) 7.37 (b) 6.1 (c) 7.17 (d) 7.27
  25. 25.What is the value of the digit 9 in 93.547? (a) 9 (b) 0.09 (c) 0.9 (d) 90
  26. 26.7.94 + 5.8 = ? (a) 8.52 (b) 13.64 (c) 13.84 (d) 13.74
  27. 27.Which is the smallest: 0.039, 0.22, 0.164, 0.2? (a) 0.039 (b) 0.22 (c) 0.164 (d) 0.2
  28. 28.3.71 + 3.4 = ? (a) 7.01 (b) 7.11 (c) 7.21 (d) 4.05
  29. 29.5.32 + 2.9 = ? (a) 8.22 (b) 5.61 (c) 8.12 (d) 8.32
  30. 30.Which is the smallest: 0.31, 0.012, 0.248, 0.3? (a) 0.31 (b) 0.012 (c) 0.248 (d) 0.3
  31. 31.What is the value of the digit 3 in 39.621? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  32. 32.6.77 + 6.9 = ? (a) 13.77 (b) 13.67 (c) 7.46 (d) 13.57
  33. 33.8.51 + 5.1 = ? (a) 13.51 (b) 13.61 (c) 9.02 (d) 13.71
  34. 34.What is the value of the digit 7 in 76.134? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  35. 35.8.91 + 9.7 = ? (a) 18.61 (b) 18.71 (c) 18.51 (d) 9.88
  36. 36.Which is the greatest: 0.58, 0.5, 0.412, 0.027? (a) 0.58 (b) 0.5 (c) 0.412 (d) 0.027
  37. 37.5.61 + 7.8 = ? (a) 6.39 (b) 13.51 (c) 13.41 (d) 13.31
  38. 38.2.96 + 5.3 = ? (a) 8.16 (b) 3.49 (c) 8.26 (d) 8.36
  39. 39.What is the value of the digit 2 in 15.278? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  40. 40.What is the value of the digit 2 in 67.812? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002

Answer key

  1. 4.43
  2. 8.51
  3. 11.01
  4. 0.78
  5. 16.13
  6. 0.025
  7. 15.71
  8. 0.092
  9. 10.93
  10. 0.002
  11. 13.41
  12. 19.02
  13. 10.53
  14. 0.6
  15. 0.007
  16. 13.99
  17. 11.58
  18. 80
  19. 0.045
  20. 0.9
  21. 0.54
  22. 0.07
  23. 0.05
  24. 7.27
  25. 90
  26. 13.74
  27. 0.039
  28. 7.11
  29. 8.22
  30. 0.012
  31. 30
  32. 13.67
  33. 13.61
  34. 70
  35. 18.61
  36. 0.58
  37. 13.41
  38. 8.26
  39. 0.2
  40. 0.002

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