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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 978 · 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.What is the value of the digit 8 in 28.619? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  2. 2.5.61 + 8.1 = ? (a) 6.42 (b) 13.61 (c) 13.71 (d) 13.81
  3. 3.What is the value of the digit 4 in 18.427? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  4. 4.What is the value of the digit 1 in 91.863? (a) 0.1 (b) 0.01 (c) 10 (d) 1
  5. 5.What is the value of the digit 1 in 26.451? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  6. 6.3.95 + 9.3 = ? (a) 13.25 (b) 13.15 (c) 13.35 (d) 4.88
  7. 7.3.17 + 8.5 = ? (a) 4.02 (b) 11.77 (c) 11.57 (d) 11.67
  8. 8.Which is the greatest: 0.085, 0.641, 0.7, 0.76? (a) 0.085 (b) 0.641 (c) 0.7 (d) 0.76
  9. 9.2.43 + 1.4 = ? (a) 2.57 (b) 3.73 (c) 3.93 (d) 3.83
  10. 10.Which is the smallest: 0.4, 0.046, 0.319, 0.45? (a) 0.4 (b) 0.046 (c) 0.319 (d) 0.45
  11. 11.8.78 + 6.2 = ? (a) 15.08 (b) 14.88 (c) 9.4 (d) 14.98
  12. 12.What is the value of the digit 9 in 17.935? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  13. 13.What is the value of the digit 5 in 71.825? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  14. 14.1.43 + 4.9 = ? (a) 6.43 (b) 6.23 (c) 6.33 (d) 1.92
  15. 15.What is the value of the digit 2 in 35.218? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  16. 16.1.44 + 5.6 = ? (a) 7.14 (b) 6.94 (c) 2 (d) 7.04
  17. 17.Which is the greatest: 0.096, 0.77, 0.7, 0.633? (a) 0.096 (b) 0.77 (c) 0.7 (d) 0.633
  18. 18.What is the value of the digit 5 in 54.263? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  19. 19.3.93 + 8.5 = ? (a) 12.43 (b) 12.53 (c) 4.78 (d) 12.33
  20. 20.4.23 + 7.4 = ? (a) 11.73 (b) 11.53 (c) 4.97 (d) 11.63
  21. 21.2.12 + 4.1 = ? (a) 6.12 (b) 6.22 (c) 2.53 (d) 6.32
  22. 22.5.92 + 2.6 = ? (a) 6.18 (b) 8.42 (c) 8.62 (d) 8.52
  23. 23.Which is the greatest: 0.032, 0.6, 0.62, 0.543? (a) 0.032 (b) 0.6 (c) 0.62 (d) 0.543
  24. 24.Which is the greatest: 0.788, 0.8, 0.82, 0.054? (a) 0.788 (b) 0.8 (c) 0.82 (d) 0.054
  25. 25.2.54 + 8.9 = ? (a) 3.43 (b) 11.44 (c) 11.54 (d) 11.34
  26. 26.4.23 + 3.3 = ? (a) 7.63 (b) 4.56 (c) 7.53 (d) 7.43
  27. 27.Which is the greatest: 0.042, 0.341, 0.41, 0.4? (a) 0.042 (b) 0.341 (c) 0.41 (d) 0.4
  28. 28.Which is the greatest: 0.079, 0.2, 0.128, 0.21? (a) 0.079 (b) 0.2 (c) 0.128 (d) 0.21
  29. 29.Which is the greatest: 0.89, 0.777, 0.092, 0.8? (a) 0.89 (b) 0.777 (c) 0.092 (d) 0.8
  30. 30.Which is the smallest: 0.29, 0.077, 0.2, 0.115? (a) 0.29 (b) 0.077 (c) 0.2 (d) 0.115
  31. 31.What is the value of the digit 8 in 73.286? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  32. 32.Which is the smallest: 0.2, 0.132, 0.21, 0.096? (a) 0.2 (b) 0.132 (c) 0.21 (d) 0.096
  33. 33.5.15 + 4.6 = ? (a) 9.65 (b) 9.75 (c) 5.61 (d) 9.85
  34. 34.What is the value of the digit 7 in 58.437? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  35. 35.What is the value of the digit 1 in 81.567? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  36. 36.Which is the greatest: 0.037, 0.685, 0.77, 0.7? (a) 0.037 (b) 0.685 (c) 0.77 (d) 0.7
  37. 37.Which is the greatest: 0.46, 0.359, 0.4, 0.048? (a) 0.46 (b) 0.359 (c) 0.4 (d) 0.048
  38. 38.3.11 + 4.3 = ? (a) 3.54 (b) 7.51 (c) 7.41 (d) 7.31
  39. 39.1.46 + 6.1 = ? (a) 7.66 (b) 7.46 (c) 7.56 (d) 2.07
  40. 40.Which is the smallest: 0.34, 0.3, 0.282, 0.062? (a) 0.34 (b) 0.3 (c) 0.282 (d) 0.062

Answer key

  1. 8
  2. 13.71
  3. 0.4
  4. 1
  5. 0.001
  6. 13.25
  7. 11.67
  8. 0.76
  9. 3.83
  10. 0.046
  11. 14.98
  12. 0.9
  13. 0.005
  14. 6.33
  15. 0.2
  16. 7.04
  17. 0.77
  18. 50
  19. 12.43
  20. 11.63
  21. 6.22
  22. 8.52
  23. 0.62
  24. 0.82
  25. 11.44
  26. 7.53
  27. 0.41
  28. 0.21
  29. 0.89
  30. 0.077
  31. 0.08
  32. 0.096
  33. 9.75
  34. 0.007
  35. 1
  36. 0.77
  37. 0.46
  38. 7.41
  39. 7.56
  40. 0.062

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