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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 822 · 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. 1.2.81 + 4.2 = ? (a) 6.91 (b) 3.23 (c) 7.01 (d) 7.11
  2. 2.3.39 + 4.3 = ? (a) 7.79 (b) 7.59 (c) 3.82 (d) 7.69
  3. 3.What is the value of the digit 1 in 89.172? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  4. 4.6.83 + 5.6 = ? (a) 12.33 (b) 12.43 (c) 7.39 (d) 12.53
  5. 5.Which is the smallest: 0.6, 0.512, 0.62, 0.058? (a) 0.6 (b) 0.512 (c) 0.62 (d) 0.058
  6. 6.Which is the greatest: 0.7, 0.77, 0.087, 0.635? (a) 0.7 (b) 0.77 (c) 0.087 (d) 0.635
  7. 7.8.07 + 2.7 = ? (a) 8.34 (b) 10.87 (c) 10.77 (d) 10.67
  8. 8.2.18 + 4.9 = ? (a) 7.18 (b) 6.98 (c) 2.67 (d) 7.08
  9. 9.7.63 + 3.1 = ? (a) 7.94 (b) 10.63 (c) 10.73 (d) 10.83
  10. 10.4.25 + 9.9 = ? (a) 14.05 (b) 14.25 (c) 14.15 (d) 5.24
  11. 11.Which is the smallest: 0.5, 0.018, 0.55, 0.428? (a) 0.5 (b) 0.018 (c) 0.55 (d) 0.428
  12. 12.4.91 + 8.3 = ? (a) 5.74 (b) 13.11 (c) 13.21 (d) 13.31
  13. 13.What is the value of the digit 1 in 16.974? (a) 0.1 (b) 0.01 (c) 10 (d) 1
  14. 14.What is the value of the digit 1 in 18.265? (a) 1 (b) 10 (c) 0.1 (d) 0.01
  15. 15.7.07 + 4.1 = ? (a) 7.48 (b) 11.27 (c) 11.17 (d) 11.07
  16. 16.Which is the smallest: 0.348, 0.033, 0.4, 0.42? (a) 0.348 (b) 0.033 (c) 0.4 (d) 0.42
  17. 17.3.35 + 8.1 = ? (a) 11.45 (b) 11.55 (c) 4.16 (d) 11.35
  18. 18.Which is the smallest: 0.49, 0.4, 0.345, 0.045? (a) 0.49 (b) 0.4 (c) 0.345 (d) 0.045
  19. 19.3.28 + 2.7 = ? (a) 6.08 (b) 5.98 (c) 5.88 (d) 3.55
  20. 20.Which is the greatest: 0.2, 0.27, 0.039, 0.111? (a) 0.2 (b) 0.27 (c) 0.039 (d) 0.111
  21. 21.Which is the smallest: 0.83, 0.085, 0.756, 0.8? (a) 0.83 (b) 0.085 (c) 0.756 (d) 0.8
  22. 22.7.51 + 6.6 = ? (a) 14.01 (b) 14.21 (c) 8.17 (d) 14.11
  23. 23.Which is the smallest: 0.013, 0.747, 0.8, 0.82? (a) 0.013 (b) 0.747 (c) 0.8 (d) 0.82
  24. 24.Which is the smallest: 0.267, 0.071, 0.3, 0.31? (a) 0.267 (b) 0.071 (c) 0.3 (d) 0.31
  25. 25.6.42 + 8.2 = ? (a) 14.52 (b) 14.62 (c) 14.72 (d) 7.24
  26. 26.Which is the greatest: 0.297, 0.32, 0.3, 0.033? (a) 0.297 (b) 0.32 (c) 0.3 (d) 0.033
  27. 27.What is the value of the digit 5 in 21.475? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  28. 28.What is the value of the digit 8 in 28.159? (a) 80 (b) 8 (c) 0.8 (d) 0.08
  29. 29.7.37 + 1.2 = ? (a) 8.47 (b) 7.49 (c) 8.57 (d) 8.67
  30. 30.7.45 + 5.9 = ? (a) 8.04 (b) 13.35 (c) 13.25 (d) 13.45
  31. 31.3.61 + 6.6 = ? (a) 4.27 (b) 10.11 (c) 10.21 (d) 10.31
  32. 32.Which is the smallest: 0.56, 0.483, 0.5, 0.081? (a) 0.56 (b) 0.483 (c) 0.5 (d) 0.081
  33. 33.Which is the greatest: 0.621, 0.049, 0.7, 0.71? (a) 0.621 (b) 0.049 (c) 0.7 (d) 0.71
  34. 34.Which is the smallest: 0.035, 0.57, 0.5, 0.417? (a) 0.035 (b) 0.57 (c) 0.5 (d) 0.417
  35. 35.What is the value of the digit 9 in 78.291? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  36. 36.What is the value of the digit 2 in 34.215? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  37. 37.Which is the smallest: 0.257, 0.31, 0.013, 0.3? (a) 0.257 (b) 0.31 (c) 0.013 (d) 0.3
  38. 38.What is the value of the digit 4 in 41.728? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  39. 39.Which is the smallest: 0.35, 0.074, 0.224, 0.3? (a) 0.35 (b) 0.074 (c) 0.224 (d) 0.3
  40. 40.9.75 + 2.8 = ? (a) 10.03 (b) 12.65 (c) 12.55 (d) 12.45

Answer key

  1. 7.01
  2. 7.69
  3. 0.1
  4. 12.43
  5. 0.058
  6. 0.77
  7. 10.77
  8. 7.08
  9. 10.73
  10. 14.15
  11. 0.018
  12. 13.21
  13. 10
  14. 10
  15. 11.17
  16. 0.033
  17. 11.45
  18. 0.045
  19. 5.98
  20. 0.27
  21. 0.085
  22. 14.11
  23. 0.013
  24. 0.071
  25. 14.62
  26. 0.32
  27. 0.005
  28. 8
  29. 8.57
  30. 13.35
  31. 10.21
  32. 0.081
  33. 0.71
  34. 0.035
  35. 0.09
  36. 0.2
  37. 0.013
  38. 40
  39. 0.074
  40. 12.55

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