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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 303 · 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. 1.4.09 + 3.2 = ? (a) 7.29 (b) 7.19 (c) 4.41 (d) 7.39
  2. 2.What is the value of the digit 9 in 69.354? (a) 90 (b) 9 (c) 0.09 (d) 0.9
  3. 3.6.17 + 3.1 = ? (a) 9.37 (b) 9.27 (c) 6.48 (d) 9.17
  4. 4.9.15 + 9.4 = ? (a) 18.65 (b) 18.45 (c) 18.55 (d) 10.09
  5. 5.3.06 + 5.6 = ? (a) 8.76 (b) 8.66 (c) 3.62 (d) 8.56
  6. 6.4.77 + 9.1 = ? (a) 13.97 (b) 5.68 (c) 13.77 (d) 13.87
  7. 7.Which is the smallest: 0.37, 0.3, 0.023, 0.228? (a) 0.37 (b) 0.3 (c) 0.023 (d) 0.228
  8. 8.4.17 + 5.4 = ? (a) 9.67 (b) 9.47 (c) 9.57 (d) 4.71
  9. 9.What is the value of the digit 5 in 54.738? (a) 0.05 (b) 50 (c) 5 (d) 0.5
  10. 10.What is the value of the digit 6 in 62.597? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  11. 11.7.47 + 5.8 = ? (a) 13.37 (b) 13.27 (c) 13.17 (d) 8.05
  12. 12.5.06 + 2.5 = ? (a) 7.56 (b) 5.31 (c) 7.66 (d) 7.46
  13. 13.Which is the greatest: 0.271, 0.038, 0.3, 0.37? (a) 0.271 (b) 0.038 (c) 0.3 (d) 0.37
  14. 14.Which is the greatest: 0.025, 0.776, 0.8, 0.86? (a) 0.025 (b) 0.776 (c) 0.8 (d) 0.86
  15. 15.7.72 + 7.6 = ? (a) 15.32 (b) 15.22 (c) 8.48 (d) 15.42
  16. 16.3.09 + 8.9 = ? (a) 11.99 (b) 11.89 (c) 3.98 (d) 12.09
  17. 17.Which is the smallest: 0.032, 0.7, 0.71, 0.662? (a) 0.032 (b) 0.7 (c) 0.71 (d) 0.662
  18. 18.2.26 + 5.4 = ? (a) 2.8 (b) 7.76 (c) 7.56 (d) 7.66
  19. 19.Which is the greatest: 0.625, 0.092, 0.7, 0.79? (a) 0.625 (b) 0.092 (c) 0.7 (d) 0.79
  20. 20.What is the value of the digit 3 in 43.271? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  21. 21.4.98 + 2.9 = ? (a) 5.27 (b) 7.98 (c) 7.88 (d) 7.78
  22. 22.What is the value of the digit 8 in 21.859? (a) 8 (b) 0.008 (c) 0.8 (d) 0.08
  23. 23.3.25 + 6.6 = ? (a) 9.95 (b) 3.91 (c) 9.75 (d) 9.85
  24. 24.9.47 + 3.4 = ? (a) 9.81 (b) 12.77 (c) 12.87 (d) 12.97
  25. 25.Which is the greatest: 0.075, 0.43, 0.314, 0.4? (a) 0.075 (b) 0.43 (c) 0.314 (d) 0.4
  26. 26.Which is the greatest: 0.4, 0.015, 0.388, 0.48? (a) 0.4 (b) 0.015 (c) 0.388 (d) 0.48
  27. 27.Which is the smallest: 0.062, 0.75, 0.7, 0.697? (a) 0.062 (b) 0.75 (c) 0.7 (d) 0.697
  28. 28.Which is the smallest: 0.45, 0.083, 0.4, 0.336? (a) 0.45 (b) 0.083 (c) 0.4 (d) 0.336
  29. 29.Which is the greatest: 0.3, 0.31, 0.223, 0.041? (a) 0.3 (b) 0.31 (c) 0.223 (d) 0.041
  30. 30.What is the value of the digit 2 in 35.127? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  31. 31.What is the value of the digit 5 in 59.821? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  32. 32.Which is the greatest: 0.039, 0.2, 0.25, 0.111? (a) 0.039 (b) 0.2 (c) 0.25 (d) 0.111
  33. 33.9.14 + 5.7 = ? (a) 14.84 (b) 9.71 (c) 14.94 (d) 14.74
  34. 34.Which is the greatest: 0.017, 0.147, 0.2, 0.21? (a) 0.017 (b) 0.147 (c) 0.2 (d) 0.21
  35. 35.Which is the smallest: 0.4, 0.334, 0.45, 0.056? (a) 0.4 (b) 0.334 (c) 0.45 (d) 0.056
  36. 36.What is the value of the digit 6 in 48.362? (a) 0.006 (b) 0.06 (c) 0.6 (d) 6
  37. 37.What is the value of the digit 5 in 57.164? (a) 5 (b) 0.05 (c) 0.5 (d) 50
  38. 38.Which is the greatest: 0.41, 0.364, 0.4, 0.096? (a) 0.41 (b) 0.364 (c) 0.4 (d) 0.096
  39. 39.What is the value of the digit 6 in 39.186? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  40. 40.4.11 + 5.9 = ? (a) 4.7 (b) 10.11 (c) 9.91 (d) 10.01

Answer key

  1. 7.29
  2. 9
  3. 9.27
  4. 18.55
  5. 8.66
  6. 13.87
  7. 0.023
  8. 9.57
  9. 50
  10. 60
  11. 13.27
  12. 7.56
  13. 0.37
  14. 0.86
  15. 15.32
  16. 11.99
  17. 0.032
  18. 7.66
  19. 0.79
  20. 3
  21. 7.88
  22. 0.8
  23. 9.85
  24. 12.87
  25. 0.43
  26. 0.48
  27. 0.062
  28. 0.083
  29. 0.31
  30. 0.02
  31. 50
  32. 0.25
  33. 14.84
  34. 0.21
  35. 0.056
  36. 0.06
  37. 50
  38. 0.41
  39. 0.006
  40. 10.01

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