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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 996 · 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. 1.9.33 + 1.1 = ? (a) 10.43 (b) 10.53 (c) 9.44 (d) 10.33
  2. 2.What is the value of the digit 1 in 59.316? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  3. 3.3.01 + 1.2 = ? (a) 3.13 (b) 4.31 (c) 4.21 (d) 4.11
  4. 4.What is the value of the digit 8 in 21.458? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  5. 5.Which is the greatest: 0.745, 0.83, 0.8, 0.029? (a) 0.745 (b) 0.83 (c) 0.8 (d) 0.029
  6. 6.6.81 + 5.6 = ? (a) 7.37 (b) 12.41 (c) 12.31 (d) 12.51
  7. 7.8.37 + 6.1 = ? (a) 14.57 (b) 14.37 (c) 14.47 (d) 8.98
  8. 8.Which is the smallest: 0.692, 0.7, 0.74, 0.021? (a) 0.692 (b) 0.7 (c) 0.74 (d) 0.021
  9. 9.2.34 + 1.1 = ? (a) 2.45 (b) 3.54 (c) 3.44 (d) 3.34
  10. 10.What is the value of the digit 8 in 63.841? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  11. 11.5.79 + 6.5 = ? (a) 12.39 (b) 6.44 (c) 12.29 (d) 12.19
  12. 12.Which is the greatest: 0.82, 0.8, 0.096, 0.782? (a) 0.82 (b) 0.8 (c) 0.096 (d) 0.782
  13. 13.2.43 + 7.8 = ? (a) 10.13 (b) 10.33 (c) 3.21 (d) 10.23
  14. 14.2.45 + 2.5 = ? (a) 4.95 (b) 2.7 (c) 4.85 (d) 5.05
  15. 15.What is the value of the digit 6 in 29.673? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  16. 16.Which is the greatest: 0.2, 0.127, 0.26, 0.045? (a) 0.2 (b) 0.127 (c) 0.26 (d) 0.045
  17. 17.What is the value of the digit 7 in 79.318? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  18. 18.5.83 + 7.2 = ? (a) 13.03 (b) 12.93 (c) 13.13 (d) 6.55
  19. 19.1.41 + 1.6 = ? (a) 3.11 (b) 1.57 (c) 2.91 (d) 3.01
  20. 20.What is the value of the digit 9 in 19.546? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  21. 21.What is the value of the digit 2 in 47.132? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  22. 22.3.61 + 4.7 = ? (a) 4.08 (b) 8.21 (c) 8.41 (d) 8.31
  23. 23.7.21 + 7.6 = ? (a) 14.81 (b) 7.97 (c) 14.71 (d) 14.91
  24. 24.What is the value of the digit 1 in 28.631? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  25. 25.Which is the greatest: 0.051, 0.336, 0.4, 0.49? (a) 0.051 (b) 0.336 (c) 0.4 (d) 0.49
  26. 26.What is the value of the digit 6 in 25.638? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  27. 27.5.15 + 6.3 = ? (a) 11.35 (b) 11.55 (c) 5.78 (d) 11.45
  28. 28.2.33 + 7.6 = ? (a) 3.09 (b) 10.03 (c) 9.93 (d) 9.83
  29. 29.Which is the greatest: 0.81, 0.093, 0.8, 0.749? (a) 0.81 (b) 0.093 (c) 0.8 (d) 0.749
  30. 30.What is the value of the digit 3 in 31.248? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  31. 31.Which is the greatest: 0.34, 0.221, 0.054, 0.3? (a) 0.34 (b) 0.221 (c) 0.054 (d) 0.3
  32. 32.What is the value of the digit 7 in 72.386? (a) 0.7 (b) 0.07 (c) 70 (d) 7
  33. 33.Which is the greatest: 0.3, 0.36, 0.017, 0.215? (a) 0.3 (b) 0.36 (c) 0.017 (d) 0.215
  34. 34.7.27 + 4.5 = ? (a) 11.67 (b) 11.87 (c) 11.77 (d) 7.72
  35. 35.What is the value of the digit 9 in 37.298? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  36. 36.What is the value of the digit 3 in 23.867? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  37. 37.Which is the smallest: 0.5, 0.418, 0.54, 0.028? (a) 0.5 (b) 0.418 (c) 0.54 (d) 0.028
  38. 38.Which is the smallest: 0.667, 0.7, 0.076, 0.75? (a) 0.667 (b) 0.7 (c) 0.076 (d) 0.75
  39. 39.4.91 + 2.6 = ? (a) 7.61 (b) 7.51 (c) 7.41 (d) 5.17
  40. 40.5.57 + 7.1 = ? (a) 12.77 (b) 6.28 (c) 12.57 (d) 12.67

Answer key

  1. 10.43
  2. 0.01
  3. 4.21
  4. 0.008
  5. 0.83
  6. 12.41
  7. 14.47
  8. 0.021
  9. 3.44
  10. 0.8
  11. 12.29
  12. 0.82
  13. 10.23
  14. 4.95
  15. 0.6
  16. 0.26
  17. 70
  18. 13.03
  19. 3.01
  20. 9
  21. 0.002
  22. 8.31
  23. 14.81
  24. 0.001
  25. 0.49
  26. 0.6
  27. 11.45
  28. 9.93
  29. 0.81
  30. 30
  31. 0.34
  32. 70
  33. 0.36
  34. 11.77
  35. 0.09
  36. 3
  37. 0.028
  38. 0.076
  39. 7.51
  40. 12.67

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