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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 964 · 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. 1.7.51 + 4.8 = ? (a) 7.99 (b) 12.21 (c) 12.41 (d) 12.31
  2. 2.Which is the greatest: 0.172, 0.21, 0.075, 0.2? (a) 0.172 (b) 0.21 (c) 0.075 (d) 0.2
  3. 3.What is the value of the digit 7 in 47.285? (a) 0.7 (b) 7 (c) 70 (d) 0.07
  4. 4.6.31 + 2.7 = ? (a) 8.91 (b) 9.11 (c) 9.01 (d) 6.58
  5. 5.7.81 + 6.4 = ? (a) 14.31 (b) 14.21 (c) 8.45 (d) 14.11
  6. 6.9.68 + 8.8 = ? (a) 18.38 (b) 18.58 (c) 10.56 (d) 18.48
  7. 7.7.43 + 2.5 = ? (a) 9.93 (b) 10.03 (c) 7.68 (d) 9.83
  8. 8.7.57 + 5.3 = ? (a) 8.1 (b) 12.97 (c) 12.87 (d) 12.77
  9. 9.Which is the smallest: 0.056, 0.39, 0.3, 0.234? (a) 0.056 (b) 0.39 (c) 0.3 (d) 0.234
  10. 10.Which is the smallest: 0.058, 0.434, 0.5, 0.54? (a) 0.058 (b) 0.434 (c) 0.5 (d) 0.54
  11. 11.Which is the greatest: 0.069, 0.41, 0.4, 0.357? (a) 0.069 (b) 0.41 (c) 0.4 (d) 0.357
  12. 12.What is the value of the digit 1 in 18.523? (a) 10 (b) 1 (c) 0.01 (d) 0.1
  13. 13.What is the value of the digit 4 in 47.518? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  14. 14.5.38 + 8.2 = ? (a) 13.58 (b) 13.68 (c) 13.48 (d) 6.2
  15. 15.Which is the smallest: 0.83, 0.776, 0.069, 0.8? (a) 0.83 (b) 0.776 (c) 0.069 (d) 0.8
  16. 16.What is the value of the digit 8 in 49.158? (a) 0.08 (b) 8 (c) 0.8 (d) 0.008
  17. 17.7.41 + 7.5 = ? (a) 14.91 (b) 15.01 (c) 8.16 (d) 14.81
  18. 18.Which is the smallest: 0.445, 0.052, 0.5, 0.59? (a) 0.445 (b) 0.052 (c) 0.5 (d) 0.59
  19. 19.What is the value of the digit 8 in 17.328? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  20. 20.Which is the greatest: 0.63, 0.6, 0.066, 0.575? (a) 0.63 (b) 0.6 (c) 0.066 (d) 0.575
  21. 21.Which is the greatest: 0.7, 0.085, 0.667, 0.72? (a) 0.7 (b) 0.085 (c) 0.667 (d) 0.72
  22. 22.Which is the greatest: 0.097, 0.8, 0.784, 0.82? (a) 0.097 (b) 0.8 (c) 0.784 (d) 0.82
  23. 23.What is the value of the digit 8 in 61.483? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  24. 24.9.52 + 3.1 = ? (a) 12.72 (b) 9.83 (c) 12.52 (d) 12.62
  25. 25.What is the value of the digit 8 in 59.687? (a) 0.008 (b) 0.8 (c) 0.08 (d) 8
  26. 26.7.56 + 2.3 = ? (a) 9.96 (b) 7.79 (c) 9.76 (d) 9.86
  27. 27.8.78 + 3.1 = ? (a) 11.88 (b) 9.09 (c) 11.98 (d) 11.78
  28. 28.7.06 + 4.9 = ? (a) 11.86 (b) 12.06 (c) 11.96 (d) 7.55
  29. 29.Which is the greatest: 0.793, 0.89, 0.041, 0.8? (a) 0.793 (b) 0.89 (c) 0.041 (d) 0.8
  30. 30.What is the value of the digit 6 in 26.153? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  31. 31.3.22 + 2.7 = ? (a) 3.49 (b) 6.02 (c) 5.92 (d) 5.82
  32. 32.5.34 + 2.5 = ? (a) 7.84 (b) 5.59 (c) 7.74 (d) 7.94
  33. 33.What is the value of the digit 1 in 93.817? (a) 0.1 (b) 0.001 (c) 0.01 (d) 1
  34. 34.What is the value of the digit 2 in 34.219? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  35. 35.8.77 + 3.9 = ? (a) 12.67 (b) 12.57 (c) 12.77 (d) 9.16
  36. 36.Which is the greatest: 0.067, 0.665, 0.7, 0.72? (a) 0.067 (b) 0.665 (c) 0.7 (d) 0.72
  37. 37.Which is the greatest: 0.4, 0.42, 0.393, 0.025? (a) 0.4 (b) 0.42 (c) 0.393 (d) 0.025
  38. 38.Which is the smallest: 0.8, 0.754, 0.078, 0.89? (a) 0.8 (b) 0.754 (c) 0.078 (d) 0.89
  39. 39.Which is the greatest: 0.2, 0.22, 0.043, 0.174? (a) 0.2 (b) 0.22 (c) 0.043 (d) 0.174
  40. 40.What is the value of the digit 8 in 81.423? (a) 80 (b) 0.8 (c) 0.08 (d) 8

Answer key

  1. 12.31
  2. 0.21
  3. 7
  4. 9.01
  5. 14.21
  6. 18.48
  7. 9.93
  8. 12.87
  9. 0.056
  10. 0.058
  11. 0.41
  12. 10
  13. 40
  14. 13.58
  15. 0.069
  16. 0.008
  17. 14.91
  18. 0.052
  19. 0.008
  20. 0.63
  21. 0.72
  22. 0.82
  23. 0.08
  24. 12.62
  25. 0.08
  26. 9.86
  27. 11.88
  28. 11.96
  29. 0.89
  30. 6
  31. 5.92
  32. 7.84
  33. 0.01
  34. 0.2
  35. 12.67
  36. 0.72
  37. 0.42
  38. 0.078
  39. 0.22
  40. 80

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