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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 430 · 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. 1.6.07 + 8.5 = ? (a) 14.47 (b) 14.67 (c) 14.57 (d) 6.92
  2. 2.Which is the greatest: 0.094, 0.64, 0.6, 0.522? (a) 0.094 (b) 0.64 (c) 0.6 (d) 0.522
  3. 3.What is the value of the digit 3 in 13.296? (a) 0.3 (b) 30 (c) 3 (d) 0.03
  4. 4.2.36 + 3.6 = ? (a) 5.96 (b) 5.86 (c) 6.06 (d) 2.72
  5. 5.Which is the smallest: 0.712, 0.89, 0.051, 0.8? (a) 0.712 (b) 0.89 (c) 0.051 (d) 0.8
  6. 6.What is the value of the digit 6 in 64.812? (a) 6 (b) 0.06 (c) 0.6 (d) 60
  7. 7.1.04 + 2.5 = ? (a) 1.29 (b) 3.44 (c) 3.64 (d) 3.54
  8. 8.What is the value of the digit 8 in 18.324? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  9. 9.9.21 + 6.5 = ? (a) 15.61 (b) 9.86 (c) 15.71 (d) 15.81
  10. 10.2.48 + 6.8 = ? (a) 3.16 (b) 9.18 (c) 9.38 (d) 9.28
  11. 11.Which is the smallest: 0.6, 0.016, 0.541, 0.61? (a) 0.6 (b) 0.016 (c) 0.541 (d) 0.61
  12. 12.What is the value of the digit 8 in 31.485? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  13. 13.What is the value of the digit 5 in 85.123? (a) 50 (b) 5 (c) 0.05 (d) 0.5
  14. 14.3.51 + 1.9 = ? (a) 5.41 (b) 5.51 (c) 5.31 (d) 3.7
  15. 15.2.09 + 1.4 = ? (a) 3.39 (b) 2.23 (c) 3.49 (d) 3.59
  16. 16.2.37 + 1.2 = ? (a) 3.57 (b) 3.47 (c) 3.67 (d) 2.49
  17. 17.6.71 + 8.5 = ? (a) 7.56 (b) 15.31 (c) 15.21 (d) 15.11
  18. 18.9.86 + 6.6 = ? (a) 16.56 (b) 10.52 (c) 16.46 (d) 16.36
  19. 19.1.65 + 3.1 = ? (a) 4.65 (b) 4.75 (c) 1.96 (d) 4.85
  20. 20.7.65 + 3.9 = ? (a) 11.45 (b) 11.55 (c) 11.65 (d) 8.04
  21. 21.What is the value of the digit 5 in 12.356? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  22. 22.Which is the smallest: 0.43, 0.059, 0.4, 0.382? (a) 0.43 (b) 0.059 (c) 0.4 (d) 0.382
  23. 23.What is the value of the digit 5 in 43.915? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  24. 24.What is the value of the digit 6 in 37.465? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  25. 25.What is the value of the digit 9 in 79.534? (a) 0.09 (b) 9 (c) 90 (d) 0.9
  26. 26.1.99 + 4.5 = ? (a) 6.49 (b) 6.59 (c) 2.44 (d) 6.39
  27. 27.Which is the smallest: 0.034, 0.7, 0.78, 0.682? (a) 0.034 (b) 0.7 (c) 0.78 (d) 0.682
  28. 28.Which is the greatest: 0.7, 0.046, 0.653, 0.75? (a) 0.7 (b) 0.046 (c) 0.653 (d) 0.75
  29. 29.1.43 + 5.1 = ? (a) 6.53 (b) 6.43 (c) 1.94 (d) 6.63
  30. 30.8.01 + 3.9 = ? (a) 8.4 (b) 11.81 (c) 11.91 (d) 12.01
  31. 31.1.97 + 9.6 = ? (a) 2.93 (b) 11.57 (c) 11.67 (d) 11.47
  32. 32.4.92 + 9.3 = ? (a) 14.12 (b) 14.32 (c) 14.22 (d) 5.85
  33. 33.What is the value of the digit 2 in 18.432? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  34. 34.2.34 + 1.2 = ? (a) 3.44 (b) 3.64 (c) 2.46 (d) 3.54
  35. 35.8.52 + 2.7 = ? (a) 11.32 (b) 11.12 (c) 8.79 (d) 11.22
  36. 36.What is the value of the digit 3 in 45.397? (a) 3 (b) 0.003 (c) 0.03 (d) 0.3
  37. 37.5.36 + 5.1 = ? (a) 10.56 (b) 10.46 (c) 5.87 (d) 10.36
  38. 38.What is the value of the digit 1 in 46.152? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  39. 39.8.01 + 4.3 = ? (a) 8.44 (b) 12.21 (c) 12.41 (d) 12.31
  40. 40.Which is the greatest: 0.3, 0.283, 0.077, 0.37? (a) 0.3 (b) 0.283 (c) 0.077 (d) 0.37

Answer key

  1. 14.57
  2. 0.64
  3. 3
  4. 5.96
  5. 0.051
  6. 60
  7. 3.54
  8. 8
  9. 15.71
  10. 9.28
  11. 0.016
  12. 0.08
  13. 5
  14. 5.41
  15. 3.49
  16. 3.57
  17. 15.21
  18. 16.46
  19. 4.75
  20. 11.55
  21. 0.05
  22. 0.059
  23. 0.005
  24. 0.06
  25. 9
  26. 6.49
  27. 0.034
  28. 0.75
  29. 6.53
  30. 11.91
  31. 11.57
  32. 14.22
  33. 0.002
  34. 3.54
  35. 11.22
  36. 0.3
  37. 10.46
  38. 0.1
  39. 12.31
  40. 0.37

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