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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 168 · 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.What is the value of the digit 5 in 91.485? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  2. 2.9.35 + 8.1 = ? (a) 17.45 (b) 17.35 (c) 10.16 (d) 17.55
  3. 3.2.71 + 5.6 = ? (a) 8.21 (b) 8.41 (c) 8.31 (d) 3.27
  4. 4.9.78 + 1.9 = ? (a) 9.97 (b) 11.58 (c) 11.68 (d) 11.78
  5. 5.What is the value of the digit 2 in 53.842? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  6. 6.5.67 + 4.6 = ? (a) 10.17 (b) 10.37 (c) 6.13 (d) 10.27
  7. 7.3.56 + 6.6 = ? (a) 10.06 (b) 10.16 (c) 10.26 (d) 4.22
  8. 8.What is the value of the digit 4 in 49.328? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  9. 9.Which is the greatest: 0.051, 0.282, 0.3, 0.31? (a) 0.051 (b) 0.282 (c) 0.3 (d) 0.31
  10. 10.7.18 + 6.7 = ? (a) 13.98 (b) 13.78 (c) 13.88 (d) 7.85
  11. 11.7.71 + 3.4 = ? (a) 11.21 (b) 8.05 (c) 11.11 (d) 11.01
  12. 12.6.67 + 2.3 = ? (a) 9.07 (b) 8.87 (c) 6.9 (d) 8.97
  13. 13.9.03 + 9.7 = ? (a) 18.63 (b) 18.73 (c) 18.83 (d) 10
  14. 14.What is the value of the digit 1 in 15.829? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  15. 15.9.99 + 3.6 = ? (a) 13.49 (b) 13.69 (c) 13.59 (d) 10.35
  16. 16.Which is the smallest: 0.86, 0.8, 0.738, 0.082? (a) 0.86 (b) 0.8 (c) 0.738 (d) 0.082
  17. 17.9.03 + 9.1 = ? (a) 9.94 (b) 18.13 (c) 18.23 (d) 18.03
  18. 18.1.46 + 4.1 = ? (a) 5.66 (b) 5.56 (c) 1.87 (d) 5.46
  19. 19.2.89 + 4.1 = ? (a) 3.3 (b) 7.09 (c) 6.99 (d) 6.89
  20. 20.Which is the smallest: 0.6, 0.62, 0.055, 0.571? (a) 0.6 (b) 0.62 (c) 0.055 (d) 0.571
  21. 21.What is the value of the digit 7 in 37.612? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  22. 22.What is the value of the digit 1 in 62.314? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  23. 23.Which is the greatest: 0.2, 0.23, 0.048, 0.147? (a) 0.2 (b) 0.23 (c) 0.048 (d) 0.147
  24. 24.Which is the greatest: 0.055, 0.36, 0.221, 0.3? (a) 0.055 (b) 0.36 (c) 0.221 (d) 0.3
  25. 25.Which is the smallest: 0.378, 0.4, 0.083, 0.43? (a) 0.378 (b) 0.4 (c) 0.083 (d) 0.43
  26. 26.Which is the greatest: 0.098, 0.35, 0.259, 0.3? (a) 0.098 (b) 0.35 (c) 0.259 (d) 0.3
  27. 27.What is the value of the digit 5 in 73.245? (a) 0.05 (b) 5 (c) 0.005 (d) 0.5
  28. 28.Which is the greatest: 0.093, 0.4, 0.314, 0.46? (a) 0.093 (b) 0.4 (c) 0.314 (d) 0.46
  29. 29.Which is the greatest: 0.024, 0.74, 0.7, 0.616? (a) 0.024 (b) 0.74 (c) 0.7 (d) 0.616
  30. 30.7.04 + 8.2 = ? (a) 7.86 (b) 15.34 (c) 15.14 (d) 15.24
  31. 31.Which is the smallest: 0.4, 0.335, 0.053, 0.41? (a) 0.4 (b) 0.335 (c) 0.053 (d) 0.41
  32. 32.6.74 + 7.1 = ? (a) 7.45 (b) 13.94 (c) 13.74 (d) 13.84
  33. 33.What is the value of the digit 2 in 81.526? (a) 0.002 (b) 0.02 (c) 2 (d) 0.2
  34. 34.Which is the smallest: 0.043, 0.4, 0.335, 0.44? (a) 0.043 (b) 0.4 (c) 0.335 (d) 0.44
  35. 35.1.16 + 3.1 = ? (a) 4.36 (b) 4.26 (c) 4.16 (d) 1.47
  36. 36.7.57 + 1.2 = ? (a) 8.87 (b) 8.67 (c) 7.69 (d) 8.77
  37. 37.What is the value of the digit 7 in 84.729? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  38. 38.What is the value of the digit 5 in 69.257? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  39. 39.What is the value of the digit 6 in 56.497? (a) 60 (b) 0.06 (c) 6 (d) 0.6
  40. 40.Which is the greatest: 0.89, 0.039, 0.777, 0.8? (a) 0.89 (b) 0.039 (c) 0.777 (d) 0.8

Answer key

  1. 0.005
  2. 17.45
  3. 8.31
  4. 11.68
  5. 0.002
  6. 10.27
  7. 10.16
  8. 40
  9. 0.31
  10. 13.88
  11. 11.11
  12. 8.97
  13. 18.73
  14. 10
  15. 13.59
  16. 0.082
  17. 18.13
  18. 5.56
  19. 6.99
  20. 0.055
  21. 7
  22. 0.01
  23. 0.23
  24. 0.36
  25. 0.083
  26. 0.35
  27. 0.005
  28. 0.46
  29. 0.74
  30. 15.24
  31. 0.053
  32. 13.84
  33. 0.02
  34. 0.043
  35. 4.26
  36. 8.77
  37. 0.7
  38. 0.05
  39. 6
  40. 0.89

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