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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 359 · 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. 1.5.21 + 2.3 = ? (a) 7.61 (b) 5.44 (c) 7.41 (d) 7.51
  2. 2.What is the value of the digit 9 in 19.375? (a) 9 (b) 0.09 (c) 90 (d) 0.9
  3. 3.5.67 + 9.1 = ? (a) 6.58 (b) 14.87 (c) 14.67 (d) 14.77
  4. 4.8.59 + 1.3 = ? (a) 9.79 (b) 9.89 (c) 8.72 (d) 9.99
  5. 5.What is the value of the digit 1 in 15.974? (a) 0.01 (b) 1 (c) 10 (d) 0.1
  6. 6.Which is the greatest: 0.7, 0.689, 0.78, 0.044? (a) 0.7 (b) 0.689 (c) 0.78 (d) 0.044
  7. 7.Which is the greatest: 0.795, 0.8, 0.028, 0.85? (a) 0.795 (b) 0.8 (c) 0.028 (d) 0.85
  8. 8.Which is the smallest: 0.21, 0.2, 0.133, 0.099? (a) 0.21 (b) 0.2 (c) 0.133 (d) 0.099
  9. 9.9.97 + 5.7 = ? (a) 15.67 (b) 10.54 (c) 15.57 (d) 15.77
  10. 10.Which is the greatest: 0.3, 0.265, 0.33, 0.076? (a) 0.3 (b) 0.265 (c) 0.33 (d) 0.076
  11. 11.9.03 + 4.1 = ? (a) 13.13 (b) 13.03 (c) 13.23 (d) 9.44
  12. 12.3.49 + 1.3 = ? (a) 4.79 (b) 4.69 (c) 3.62 (d) 4.89
  13. 13.8.37 + 9.1 = ? (a) 17.47 (b) 9.28 (c) 17.37 (d) 17.57
  14. 14.What is the value of the digit 3 in 36.417? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  15. 15.Which is the greatest: 0.044, 0.5, 0.431, 0.54? (a) 0.044 (b) 0.5 (c) 0.431 (d) 0.54
  16. 16.3.15 + 7.8 = ? (a) 3.93 (b) 10.85 (c) 11.05 (d) 10.95
  17. 17.Which is the greatest: 0.095, 0.112, 0.22, 0.2? (a) 0.095 (b) 0.112 (c) 0.22 (d) 0.2
  18. 18.7.51 + 1.4 = ? (a) 8.91 (b) 8.81 (c) 7.65 (d) 9.01
  19. 19.What is the value of the digit 6 in 64.351? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  20. 20.1.39 + 5.5 = ? (a) 6.89 (b) 6.79 (c) 6.99 (d) 1.94
  21. 21.What is the value of the digit 8 in 29.817? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  22. 22.Which is the smallest: 0.7, 0.625, 0.046, 0.72? (a) 0.7 (b) 0.625 (c) 0.046 (d) 0.72
  23. 23.Which is the greatest: 0.674, 0.7, 0.77, 0.045? (a) 0.674 (b) 0.7 (c) 0.77 (d) 0.045
  24. 24.Which is the greatest: 0.8, 0.87, 0.774, 0.072? (a) 0.8 (b) 0.87 (c) 0.774 (d) 0.072
  25. 25.What is the value of the digit 6 in 74.162? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  26. 26.2.05 + 3.5 = ? (a) 5.55 (b) 5.45 (c) 5.65 (d) 2.4
  27. 27.5.33 + 8.2 = ? (a) 6.15 (b) 13.53 (c) 13.63 (d) 13.43
  28. 28.3.21 + 7.2 = ? (a) 10.41 (b) 10.51 (c) 10.31 (d) 3.93
  29. 29.Which is the greatest: 0.321, 0.078, 0.4, 0.47? (a) 0.321 (b) 0.078 (c) 0.4 (d) 0.47
  30. 30.1.55 + 8.5 = ? (a) 2.4 (b) 10.05 (c) 10.15 (d) 9.95
  31. 31.2.96 + 8.4 = ? (a) 11.46 (b) 11.26 (c) 3.8 (d) 11.36
  32. 32.Which is the greatest: 0.24, 0.136, 0.098, 0.2? (a) 0.24 (b) 0.136 (c) 0.098 (d) 0.2
  33. 33.What is the value of the digit 3 in 62.431? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  34. 34.7.72 + 5.7 = ? (a) 13.32 (b) 8.29 (c) 13.42 (d) 13.52
  35. 35.1.28 + 3.6 = ? (a) 4.98 (b) 1.64 (c) 4.78 (d) 4.88
  36. 36.6.08 + 4.3 = ? (a) 10.38 (b) 6.51 (c) 10.28 (d) 10.48
  37. 37.7.45 + 1.1 = ? (a) 8.65 (b) 8.45 (c) 7.56 (d) 8.55
  38. 38.Which is the smallest: 0.044, 0.4, 0.45, 0.357? (a) 0.044 (b) 0.4 (c) 0.45 (d) 0.357
  39. 39.Which is the smallest: 0.039, 0.8, 0.765, 0.88? (a) 0.039 (b) 0.8 (c) 0.765 (d) 0.88
  40. 40.7.74 + 2.8 = ? (a) 10.64 (b) 10.44 (c) 8.02 (d) 10.54

Answer key

  1. 7.51
  2. 9
  3. 14.77
  4. 9.89
  5. 10
  6. 0.78
  7. 0.85
  8. 0.099
  9. 15.67
  10. 0.33
  11. 13.13
  12. 4.79
  13. 17.47
  14. 30
  15. 0.54
  16. 10.95
  17. 0.22
  18. 8.91
  19. 60
  20. 6.89
  21. 0.8
  22. 0.046
  23. 0.77
  24. 0.87
  25. 0.06
  26. 5.55
  27. 13.53
  28. 10.41
  29. 0.47
  30. 10.05
  31. 11.36
  32. 0.24
  33. 0.03
  34. 13.42
  35. 4.88
  36. 10.38
  37. 8.55
  38. 0.044
  39. 0.039
  40. 10.54

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