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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 912 · 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.Which is the smallest: 0.669, 0.7, 0.75, 0.041? (a) 0.669 (b) 0.7 (c) 0.75 (d) 0.041
  2. 2.8.56 + 5.7 = ? (a) 14.36 (b) 14.16 (c) 9.13 (d) 14.26
  3. 3.3.65 + 5.7 = ? (a) 9.25 (b) 4.22 (c) 9.45 (d) 9.35
  4. 4.6.13 + 1.8 = ? (a) 8.03 (b) 7.93 (c) 6.31 (d) 7.83
  5. 5.4.45 + 9.4 = ? (a) 13.85 (b) 13.95 (c) 5.39 (d) 13.75
  6. 6.What is the value of the digit 1 in 47.518? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  7. 7.Which is the smallest: 0.452, 0.59, 0.5, 0.015? (a) 0.452 (b) 0.59 (c) 0.5 (d) 0.015
  8. 8.What is the value of the digit 2 in 23.879? (a) 0.02 (b) 2 (c) 0.2 (d) 20
  9. 9.What is the value of the digit 9 in 97.521? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  10. 10.What is the value of the digit 1 in 36.198? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  11. 11.Which is the smallest: 0.58, 0.5, 0.413, 0.091? (a) 0.58 (b) 0.5 (c) 0.413 (d) 0.091
  12. 12.2.57 + 5.1 = ? (a) 7.67 (b) 7.77 (c) 7.57 (d) 3.08
  13. 13.What is the value of the digit 8 in 28.173? (a) 80 (b) 0.08 (c) 8 (d) 0.8
  14. 14.Which is the smallest: 0.43, 0.388, 0.016, 0.4? (a) 0.43 (b) 0.388 (c) 0.016 (d) 0.4
  15. 15.What is the value of the digit 2 in 17.625? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  16. 16.2.07 + 7.4 = ? (a) 9.57 (b) 9.47 (c) 9.37 (d) 2.81
  17. 17.What is the value of the digit 7 in 67.935? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  18. 18.What is the value of the digit 8 in 82.596? (a) 0.8 (b) 0.08 (c) 8 (d) 80
  19. 19.7.73 + 1.2 = ? (a) 8.93 (b) 7.85 (c) 8.83 (d) 9.03
  20. 20.What is the value of the digit 2 in 12.843? (a) 0.2 (b) 2 (c) 0.02 (d) 20
  21. 21.Which is the smallest: 0.5, 0.029, 0.418, 0.52? (a) 0.5 (b) 0.029 (c) 0.418 (d) 0.52
  22. 22.9.03 + 7.6 = ? (a) 9.79 (b) 16.73 (c) 16.53 (d) 16.63
  23. 23.1.71 + 3.5 = ? (a) 5.21 (b) 5.11 (c) 5.31 (d) 2.06
  24. 24.Which is the greatest: 0.065, 0.32, 0.3, 0.212? (a) 0.065 (b) 0.32 (c) 0.3 (d) 0.212
  25. 25.2.11 + 9.1 = ? (a) 11.31 (b) 3.02 (c) 11.11 (d) 11.21
  26. 26.9.79 + 4.5 = ? (a) 14.19 (b) 14.39 (c) 14.29 (d) 10.24
  27. 27.Which is the smallest: 0.5, 0.063, 0.56, 0.438? (a) 0.5 (b) 0.063 (c) 0.56 (d) 0.438
  28. 28.What is the value of the digit 7 in 34.876? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  29. 29.What is the value of the digit 9 in 82.159? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  30. 30.What is the value of the digit 2 in 31.427? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  31. 31.8.79 + 8.5 = ? (a) 17.29 (b) 17.39 (c) 17.19 (d) 9.64
  32. 32.7.72 + 8.8 = ? (a) 16.62 (b) 16.42 (c) 16.52 (d) 8.6
  33. 33.4.52 + 5.1 = ? (a) 5.03 (b) 9.52 (c) 9.62 (d) 9.72
  34. 34.8.95 + 2.4 = ? (a) 11.25 (b) 11.35 (c) 11.45 (d) 9.19
  35. 35.Which is the greatest: 0.8, 0.89, 0.733, 0.033? (a) 0.8 (b) 0.89 (c) 0.733 (d) 0.033
  36. 36.Which is the smallest: 0.4, 0.398, 0.011, 0.45? (a) 0.4 (b) 0.398 (c) 0.011 (d) 0.45
  37. 37.Which is the smallest: 0.87, 0.719, 0.8, 0.012? (a) 0.87 (b) 0.719 (c) 0.8 (d) 0.012
  38. 38.What is the value of the digit 2 in 52.681? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  39. 39.9.02 + 3.8 = ? (a) 12.82 (b) 12.72 (c) 12.92 (d) 9.4
  40. 40.6.65 + 9.6 = ? (a) 16.15 (b) 7.61 (c) 16.35 (d) 16.25

Answer key

  1. 0.041
  2. 14.26
  3. 9.35
  4. 7.93
  5. 13.85
  6. 0.01
  7. 0.015
  8. 20
  9. 90
  10. 0.1
  11. 0.091
  12. 7.67
  13. 8
  14. 0.016
  15. 0.02
  16. 9.47
  17. 7
  18. 80
  19. 8.93
  20. 2
  21. 0.029
  22. 16.63
  23. 5.21
  24. 0.32
  25. 11.21
  26. 14.29
  27. 0.063
  28. 0.07
  29. 0.009
  30. 0.02
  31. 17.29
  32. 16.52
  33. 9.62
  34. 11.35
  35. 0.89
  36. 0.011
  37. 0.012
  38. 2
  39. 12.82
  40. 16.25

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