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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 922 · 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. 1.3.71 + 6.9 = ? (a) 10.71 (b) 10.51 (c) 4.4 (d) 10.61
  2. 2.8.46 + 3.7 = ? (a) 12.06 (b) 8.83 (c) 12.26 (d) 12.16
  3. 3.Which is the greatest: 0.36, 0.022, 0.3, 0.252? (a) 0.36 (b) 0.022 (c) 0.3 (d) 0.252
  4. 4.3.47 + 9.3 = ? (a) 12.77 (b) 4.4 (c) 12.87 (d) 12.67
  5. 5.Which is the smallest: 0.32, 0.232, 0.3, 0.021? (a) 0.32 (b) 0.232 (c) 0.3 (d) 0.021
  6. 6.1.53 + 5.1 = ? (a) 6.73 (b) 2.04 (c) 6.53 (d) 6.63
  7. 7.7.64 + 4.4 = ? (a) 11.94 (b) 8.08 (c) 12.14 (d) 12.04
  8. 8.Which is the smallest: 0.296, 0.34, 0.072, 0.3? (a) 0.296 (b) 0.34 (c) 0.072 (d) 0.3
  9. 9.What is the value of the digit 5 in 15.826? (a) 50 (b) 5 (c) 0.05 (d) 0.5
  10. 10.What is the value of the digit 4 in 92.741? (a) 0.04 (b) 0.004 (c) 0.4 (d) 4
  11. 11.5.58 + 1.3 = ? (a) 6.98 (b) 6.78 (c) 5.71 (d) 6.88
  12. 12.Which is the smallest: 0.783, 0.8, 0.82, 0.041? (a) 0.783 (b) 0.8 (c) 0.82 (d) 0.041
  13. 13.What is the value of the digit 1 in 25.381? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  14. 14.What is the value of the digit 3 in 36.517? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  15. 15.6.99 + 8.7 = ? (a) 15.59 (b) 15.79 (c) 7.86 (d) 15.69
  16. 16.8.89 + 6.8 = ? (a) 15.59 (b) 9.57 (c) 15.79 (d) 15.69
  17. 17.What is the value of the digit 2 in 86.234? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  18. 18.Which is the greatest: 0.681, 0.71, 0.7, 0.074? (a) 0.681 (b) 0.71 (c) 0.7 (d) 0.074
  19. 19.Which is the smallest: 0.4, 0.41, 0.326, 0.039? (a) 0.4 (b) 0.41 (c) 0.326 (d) 0.039
  20. 20.5.45 + 4.1 = ? (a) 5.86 (b) 9.55 (c) 9.45 (d) 9.65
  21. 21.What is the value of the digit 7 in 27.853? (a) 0.07 (b) 70 (c) 7 (d) 0.7
  22. 22.What is the value of the digit 5 in 81.695? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  23. 23.What is the value of the digit 6 in 61.842? (a) 0.06 (b) 0.6 (c) 6 (d) 60
  24. 24.9.71 + 7.4 = ? (a) 17.01 (b) 17.11 (c) 10.45 (d) 17.21
  25. 25.Which is the smallest: 0.219, 0.33, 0.027, 0.3? (a) 0.219 (b) 0.33 (c) 0.027 (d) 0.3
  26. 26.Which is the greatest: 0.88, 0.012, 0.8, 0.726? (a) 0.88 (b) 0.012 (c) 0.8 (d) 0.726
  27. 27.Which is the smallest: 0.3, 0.046, 0.268, 0.36? (a) 0.3 (b) 0.046 (c) 0.268 (d) 0.36
  28. 28.6.46 + 9.2 = ? (a) 15.76 (b) 15.56 (c) 7.38 (d) 15.66
  29. 29.Which is the greatest: 0.058, 0.44, 0.4, 0.312? (a) 0.058 (b) 0.44 (c) 0.4 (d) 0.312
  30. 30.Which is the greatest: 0.073, 0.291, 0.32, 0.3? (a) 0.073 (b) 0.291 (c) 0.32 (d) 0.3
  31. 31.4.77 + 5.1 = ? (a) 5.28 (b) 9.87 (c) 9.77 (d) 9.97
  32. 32.What is the value of the digit 8 in 59.628? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  33. 33.What is the value of the digit 1 in 28.719? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  34. 34.1.93 + 8.7 = ? (a) 10.63 (b) 10.73 (c) 10.53 (d) 2.8
  35. 35.What is the value of the digit 8 in 23.817? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  36. 36.Which is the smallest: 0.757, 0.82, 0.064, 0.8? (a) 0.757 (b) 0.82 (c) 0.064 (d) 0.8
  37. 37.Which is the smallest: 0.31, 0.081, 0.3, 0.247? (a) 0.31 (b) 0.081 (c) 0.3 (d) 0.247
  38. 38.What is the value of the digit 7 in 81.937? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  39. 39.What is the value of the digit 6 in 39.614? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  40. 40.What is the value of the digit 4 in 92.457? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04

Answer key

  1. 10.61
  2. 12.16
  3. 0.36
  4. 12.77
  5. 0.021
  6. 6.63
  7. 12.04
  8. 0.072
  9. 5
  10. 0.04
  11. 6.88
  12. 0.041
  13. 0.001
  14. 30
  15. 15.69
  16. 15.69
  17. 0.2
  18. 0.71
  19. 0.039
  20. 9.55
  21. 7
  22. 0.005
  23. 60
  24. 17.11
  25. 0.027
  26. 0.88
  27. 0.046
  28. 15.66
  29. 0.44
  30. 0.32
  31. 9.87
  32. 0.008
  33. 0.01
  34. 10.63
  35. 0.8
  36. 0.064
  37. 0.081
  38. 0.007
  39. 0.6
  40. 0.4

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