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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 864 · 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. 1.4.31 + 8.8 = ? (a) 5.19 (b) 13.01 (c) 13.21 (d) 13.11
  2. 2.What is the value of the digit 8 in 28.617? (a) 80 (b) 0.08 (c) 8 (d) 0.8
  3. 3.7.94 + 8.7 = ? (a) 16.74 (b) 16.54 (c) 16.64 (d) 8.81
  4. 4.Which is the smallest: 0.48, 0.314, 0.4, 0.031? (a) 0.48 (b) 0.314 (c) 0.4 (d) 0.031
  5. 5.Which is the greatest: 0.396, 0.098, 0.4, 0.49? (a) 0.396 (b) 0.098 (c) 0.4 (d) 0.49
  6. 6.6.05 + 6.6 = ? (a) 12.55 (b) 12.65 (c) 12.75 (d) 6.71
  7. 7.5.02 + 9.1 = ? (a) 14.02 (b) 14.22 (c) 14.12 (d) 5.93
  8. 8.What is the value of the digit 4 in 85.794? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  9. 9.7.33 + 4.3 = ? (a) 7.76 (b) 11.53 (c) 11.73 (d) 11.63
  10. 10.What is the value of the digit 8 in 79.814? (a) 8 (b) 0.08 (c) 0.008 (d) 0.8
  11. 11.5.42 + 5.9 = ? (a) 11.22 (b) 11.42 (c) 11.32 (d) 6.01
  12. 12.Which is the smallest: 0.21, 0.116, 0.028, 0.2? (a) 0.21 (b) 0.116 (c) 0.028 (d) 0.2
  13. 13.1.78 + 5.6 = ? (a) 2.34 (b) 7.48 (c) 7.38 (d) 7.28
  14. 14.Which is the greatest: 0.83, 0.725, 0.069, 0.8? (a) 0.83 (b) 0.725 (c) 0.069 (d) 0.8
  15. 15.1.96 + 6.9 = ? (a) 2.65 (b) 8.86 (c) 8.96 (d) 8.76
  16. 16.Which is the greatest: 0.24, 0.2, 0.034, 0.116? (a) 0.24 (b) 0.2 (c) 0.034 (d) 0.116
  17. 17.1.55 + 5.1 = ? (a) 6.65 (b) 6.75 (c) 2.06 (d) 6.55
  18. 18.Which is the smallest: 0.617, 0.057, 0.7, 0.78? (a) 0.617 (b) 0.057 (c) 0.7 (d) 0.78
  19. 19.Which is the smallest: 0.015, 0.4, 0.388, 0.43? (a) 0.015 (b) 0.4 (c) 0.388 (d) 0.43
  20. 20.8.06 + 4.1 = ? (a) 12.26 (b) 8.47 (c) 12.16 (d) 12.06
  21. 21.Which is the smallest: 0.022, 0.32, 0.215, 0.3? (a) 0.022 (b) 0.32 (c) 0.215 (d) 0.3
  22. 22.What is the value of the digit 7 in 87.415? (a) 0.07 (b) 70 (c) 7 (d) 0.7
  23. 23.9.53 + 1.9 = ? (a) 11.53 (b) 11.43 (c) 9.72 (d) 11.33
  24. 24.Which is the greatest: 0.388, 0.4, 0.071, 0.45? (a) 0.388 (b) 0.4 (c) 0.071 (d) 0.45
  25. 25.What is the value of the digit 5 in 51.723? (a) 50 (b) 0.05 (c) 0.5 (d) 5
  26. 26.Which is the greatest: 0.339, 0.49, 0.4, 0.059? (a) 0.339 (b) 0.49 (c) 0.4 (d) 0.059
  27. 27.What is the value of the digit 8 in 82.469? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  28. 28.9.04 + 2.4 = ? (a) 9.28 (b) 11.54 (c) 11.34 (d) 11.44
  29. 29.Which is the greatest: 0.184, 0.22, 0.2, 0.018? (a) 0.184 (b) 0.22 (c) 0.2 (d) 0.018
  30. 30.What is the value of the digit 4 in 48.231? (a) 40 (b) 4 (c) 0.4 (d) 0.04
  31. 31.Which is the smallest: 0.2, 0.24, 0.185, 0.067? (a) 0.2 (b) 0.24 (c) 0.185 (d) 0.067
  32. 32.Which is the greatest: 0.67, 0.041, 0.559, 0.6? (a) 0.67 (b) 0.041 (c) 0.559 (d) 0.6
  33. 33.Which is the smallest: 0.783, 0.087, 0.8, 0.88? (a) 0.783 (b) 0.087 (c) 0.8 (d) 0.88
  34. 34.What is the value of the digit 1 in 16.723? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  35. 35.2.37 + 3.4 = ? (a) 5.67 (b) 5.87 (c) 2.71 (d) 5.77
  36. 36.What is the value of the digit 9 in 37.985? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  37. 37.9.85 + 6.3 = ? (a) 16.15 (b) 16.25 (c) 16.05 (d) 10.48
  38. 38.6.76 + 3.1 = ? (a) 7.07 (b) 9.86 (c) 9.96 (d) 9.76
  39. 39.What is the value of the digit 9 in 19.736? (a) 90 (b) 9 (c) 0.09 (d) 0.9
  40. 40.4.31 + 9.9 = ? (a) 14.31 (b) 5.3 (c) 14.11 (d) 14.21

Answer key

  1. 13.11
  2. 8
  3. 16.64
  4. 0.031
  5. 0.49
  6. 12.65
  7. 14.12
  8. 0.004
  9. 11.63
  10. 0.8
  11. 11.32
  12. 0.028
  13. 7.38
  14. 0.83
  15. 8.86
  16. 0.24
  17. 6.65
  18. 0.057
  19. 0.015
  20. 12.16
  21. 0.022
  22. 7
  23. 11.43
  24. 0.45
  25. 50
  26. 0.49
  27. 80
  28. 11.44
  29. 0.22
  30. 40
  31. 0.067
  32. 0.67
  33. 0.087
  34. 10
  35. 5.77
  36. 0.9
  37. 16.15
  38. 9.86
  39. 9
  40. 14.21

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