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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 268 · 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 greatest: 0.79, 0.022, 0.686, 0.7? (a) 0.79 (b) 0.022 (c) 0.686 (d) 0.7
  2. 2.2.57 + 7.1 = ? (a) 9.77 (b) 9.67 (c) 9.57 (d) 3.28
  3. 3.8.23 + 7.6 = ? (a) 15.73 (b) 8.99 (c) 15.93 (d) 15.83
  4. 4.What is the value of the digit 3 in 47.813? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  5. 5.What is the value of the digit 2 in 29.467? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  6. 6.Which is the greatest: 0.4, 0.45, 0.319, 0.044? (a) 0.4 (b) 0.45 (c) 0.319 (d) 0.044
  7. 7.Which is the smallest: 0.042, 0.262, 0.3, 0.33? (a) 0.042 (b) 0.262 (c) 0.3 (d) 0.33
  8. 8.Which is the greatest: 0.055, 0.53, 0.5, 0.451? (a) 0.055 (b) 0.53 (c) 0.5 (d) 0.451
  9. 9.Which is the smallest: 0.55, 0.5, 0.438, 0.033? (a) 0.55 (b) 0.5 (c) 0.438 (d) 0.033
  10. 10.Which is the smallest: 0.8, 0.82, 0.712, 0.035? (a) 0.8 (b) 0.82 (c) 0.712 (d) 0.035
  11. 11.What is the value of the digit 5 in 38.951? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  12. 12.1.62 + 4.7 = ? (a) 6.22 (b) 2.09 (c) 6.42 (d) 6.32
  13. 13.What is the value of the digit 1 in 52.831? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  14. 14.7.88 + 2.5 = ? (a) 10.38 (b) 8.13 (c) 10.28 (d) 10.48
  15. 15.3.91 + 7.3 = ? (a) 11.31 (b) 11.11 (c) 11.21 (d) 4.64
  16. 16.Which is the smallest: 0.3, 0.232, 0.38, 0.071? (a) 0.3 (b) 0.232 (c) 0.38 (d) 0.071
  17. 17.Which is the greatest: 0.267, 0.3, 0.37, 0.093? (a) 0.267 (b) 0.3 (c) 0.37 (d) 0.093
  18. 18.Which is the smallest: 0.24, 0.038, 0.2, 0.121? (a) 0.24 (b) 0.038 (c) 0.2 (d) 0.121
  19. 19.What is the value of the digit 7 in 81.974? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  20. 20.4.59 + 4.1 = ? (a) 5 (b) 8.69 (c) 8.79 (d) 8.59
  21. 21.What is the value of the digit 3 in 17.639? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  22. 22.Which is the smallest: 0.6, 0.087, 0.523, 0.61? (a) 0.6 (b) 0.087 (c) 0.523 (d) 0.61
  23. 23.3.21 + 2.1 = ? (a) 5.31 (b) 5.21 (c) 3.42 (d) 5.41
  24. 24.6.52 + 1.5 = ? (a) 6.67 (b) 7.92 (c) 8.02 (d) 8.12
  25. 25.Which is the smallest: 0.74, 0.092, 0.655, 0.7? (a) 0.74 (b) 0.092 (c) 0.655 (d) 0.7
  26. 26.Which is the smallest: 0.043, 0.2, 0.148, 0.25? (a) 0.043 (b) 0.2 (c) 0.148 (d) 0.25
  27. 27.5.06 + 8.8 = ? (a) 5.94 (b) 13.86 (c) 13.96 (d) 13.76
  28. 28.What is the value of the digit 3 in 79.132? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  29. 29.5.61 + 6.1 = ? (a) 11.81 (b) 11.61 (c) 6.22 (d) 11.71
  30. 30.Which is the smallest: 0.477, 0.085, 0.5, 0.54? (a) 0.477 (b) 0.085 (c) 0.5 (d) 0.54
  31. 31.6.28 + 1.7 = ? (a) 8.08 (b) 6.45 (c) 7.98 (d) 7.88
  32. 32.5.29 + 7.7 = ? (a) 12.99 (b) 12.89 (c) 13.09 (d) 6.06
  33. 33.Which is the greatest: 0.6, 0.553, 0.66, 0.054? (a) 0.6 (b) 0.553 (c) 0.66 (d) 0.054
  34. 34.7.69 + 5.6 = ? (a) 13.19 (b) 13.29 (c) 8.25 (d) 13.39
  35. 35.Which is the smallest: 0.795, 0.072, 0.8, 0.88? (a) 0.795 (b) 0.072 (c) 0.8 (d) 0.88
  36. 36.What is the value of the digit 9 in 79.614? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  37. 37.What is the value of the digit 3 in 37.596? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  38. 38.Which is the smallest: 0.213, 0.3, 0.38, 0.046? (a) 0.213 (b) 0.3 (c) 0.38 (d) 0.046
  39. 39.2.54 + 8.2 = ? (a) 10.74 (b) 10.64 (c) 10.84 (d) 3.36
  40. 40.Which is the smallest: 0.072, 0.194, 0.26, 0.2? (a) 0.072 (b) 0.194 (c) 0.26 (d) 0.2

Answer key

  1. 0.79
  2. 9.67
  3. 15.83
  4. 0.003
  5. 20
  6. 0.45
  7. 0.042
  8. 0.53
  9. 0.033
  10. 0.035
  11. 0.05
  12. 6.32
  13. 0.001
  14. 10.38
  15. 11.21
  16. 0.071
  17. 0.37
  18. 0.038
  19. 0.07
  20. 8.69
  21. 0.03
  22. 0.087
  23. 5.31
  24. 8.02
  25. 0.092
  26. 0.043
  27. 13.86
  28. 0.03
  29. 11.71
  30. 0.085
  31. 7.98
  32. 12.99
  33. 0.66
  34. 13.29
  35. 0.072
  36. 9
  37. 30
  38. 0.046
  39. 10.74
  40. 0.072

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