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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 988 · 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. 1.6.71 + 5.8 = ? (a) 12.61 (b) 7.29 (c) 12.51 (d) 12.41
  2. 2.2.07 + 1.3 = ? (a) 3.27 (b) 2.2 (c) 3.37 (d) 3.47
  3. 3.Which is the smallest: 0.77, 0.697, 0.022, 0.7? (a) 0.77 (b) 0.697 (c) 0.022 (d) 0.7
  4. 4.6.11 + 2.1 = ? (a) 8.31 (b) 6.32 (c) 8.11 (d) 8.21
  5. 5.What is the value of the digit 5 in 57.192? (a) 0.05 (b) 5 (c) 0.5 (d) 50
  6. 6.Which is the greatest: 0.045, 0.84, 0.8, 0.783? (a) 0.045 (b) 0.84 (c) 0.8 (d) 0.783
  7. 7.What is the value of the digit 9 in 64.519? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  8. 8.Which is the greatest: 0.344, 0.47, 0.095, 0.4? (a) 0.344 (b) 0.47 (c) 0.095 (d) 0.4
  9. 9.1.54 + 6.6 = ? (a) 2.2 (b) 8.24 (c) 8.04 (d) 8.14
  10. 10.9.15 + 5.3 = ? (a) 14.55 (b) 9.68 (c) 14.35 (d) 14.45
  11. 11.6.21 + 5.2 = ? (a) 11.51 (b) 6.73 (c) 11.41 (d) 11.31
  12. 12.Which is the smallest: 0.221, 0.38, 0.016, 0.3? (a) 0.221 (b) 0.38 (c) 0.016 (d) 0.3
  13. 13.What is the value of the digit 5 in 52.693? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  14. 14.2.01 + 4.4 = ? (a) 2.45 (b) 6.41 (c) 6.51 (d) 6.31
  15. 15.7.62 + 6.7 = ? (a) 8.29 (b) 14.42 (c) 14.32 (d) 14.22
  16. 16.What is the value of the digit 2 in 35.218? (a) 2 (b) 0.2 (c) 0.02 (d) 0.002
  17. 17.6.01 + 3.5 = ? (a) 6.36 (b) 9.41 (c) 9.61 (d) 9.51
  18. 18.Which is the smallest: 0.5, 0.059, 0.486, 0.59? (a) 0.5 (b) 0.059 (c) 0.486 (d) 0.59
  19. 19.Which is the greatest: 0.82, 0.773, 0.8, 0.026? (a) 0.82 (b) 0.773 (c) 0.8 (d) 0.026
  20. 20.What is the value of the digit 3 in 86.352? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  21. 21.9.61 + 5.5 = ? (a) 15.11 (b) 15.21 (c) 15.01 (d) 10.16
  22. 22.4.21 + 6.3 = ? (a) 4.84 (b) 10.51 (c) 10.61 (d) 10.41
  23. 23.What is the value of the digit 6 in 96.724? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  24. 24.Which is the greatest: 0.57, 0.084, 0.5, 0.452? (a) 0.57 (b) 0.084 (c) 0.5 (d) 0.452
  25. 25.What is the value of the digit 7 in 45.372? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  26. 26.What is the value of the digit 3 in 32.869? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  27. 27.8.99 + 8.9 = ? (a) 17.79 (b) 17.89 (c) 17.99 (d) 9.88
  28. 28.1.31 + 2.7 = ? (a) 1.58 (b) 3.91 (c) 4.01 (d) 4.11
  29. 29.3.73 + 5.5 = ? (a) 9.23 (b) 4.28 (c) 9.33 (d) 9.13
  30. 30.Which is the greatest: 0.294, 0.3, 0.055, 0.31? (a) 0.294 (b) 0.3 (c) 0.055 (d) 0.31
  31. 31.Which is the greatest: 0.014, 0.269, 0.3, 0.33? (a) 0.014 (b) 0.269 (c) 0.3 (d) 0.33
  32. 32.7.01 + 4.1 = ? (a) 11.11 (b) 11.21 (c) 7.42 (d) 11.01
  33. 33.What is the value of the digit 9 in 59.683? (a) 0.9 (b) 0.09 (c) 90 (d) 9
  34. 34.Which is the smallest: 0.46, 0.096, 0.4, 0.364? (a) 0.46 (b) 0.096 (c) 0.4 (d) 0.364
  35. 35.What is the value of the digit 5 in 52.893? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  36. 36.Which is the greatest: 0.21, 0.2, 0.082, 0.168? (a) 0.21 (b) 0.2 (c) 0.082 (d) 0.168
  37. 37.What is the value of the digit 1 in 86.137? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  38. 38.Which is the greatest: 0.039, 0.2, 0.27, 0.193? (a) 0.039 (b) 0.2 (c) 0.27 (d) 0.193
  39. 39.Which is the smallest: 0.3, 0.069, 0.37, 0.278? (a) 0.3 (b) 0.069 (c) 0.37 (d) 0.278
  40. 40.9.35 + 5.2 = ? (a) 9.87 (b) 14.45 (c) 14.55 (d) 14.65

Answer key

  1. 12.51
  2. 3.37
  3. 0.022
  4. 8.21
  5. 50
  6. 0.84
  7. 0.009
  8. 0.47
  9. 8.14
  10. 14.45
  11. 11.41
  12. 0.016
  13. 50
  14. 6.41
  15. 14.32
  16. 0.2
  17. 9.51
  18. 0.059
  19. 0.82
  20. 0.3
  21. 15.11
  22. 10.51
  23. 6
  24. 0.57
  25. 0.07
  26. 30
  27. 17.89
  28. 4.01
  29. 9.23
  30. 0.31
  31. 0.33
  32. 11.11
  33. 9
  34. 0.096
  35. 50
  36. 0.21
  37. 0.1
  38. 0.27
  39. 0.069
  40. 14.55

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