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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 86 · 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 1 in 86.195? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  2. 2.7.59 + 1.4 = ? (a) 8.89 (b) 9.09 (c) 7.73 (d) 8.99
  3. 3.Which is the greatest: 0.2, 0.22, 0.148, 0.072? (a) 0.2 (b) 0.22 (c) 0.148 (d) 0.072
  4. 4.Which is the smallest: 0.147, 0.22, 0.2, 0.021? (a) 0.147 (b) 0.22 (c) 0.2 (d) 0.021
  5. 5.What is the value of the digit 5 in 35.917? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  6. 6.5.84 + 5.9 = ? (a) 6.43 (b) 11.84 (c) 11.64 (d) 11.74
  7. 7.Which is the smallest: 0.69, 0.044, 0.6, 0.569? (a) 0.69 (b) 0.044 (c) 0.6 (d) 0.569
  8. 8.8.37 + 2.8 = ? (a) 11.17 (b) 11.27 (c) 11.07 (d) 8.65
  9. 9.Which is the greatest: 0.34, 0.057, 0.247, 0.3? (a) 0.34 (b) 0.057 (c) 0.247 (d) 0.3
  10. 10.Which is the smallest: 0.63, 0.586, 0.087, 0.6? (a) 0.63 (b) 0.586 (c) 0.087 (d) 0.6
  11. 11.7.78 + 3.2 = ? (a) 11.08 (b) 10.88 (c) 10.98 (d) 8.1
  12. 12.Which is the smallest: 0.65, 0.6, 0.593, 0.033? (a) 0.65 (b) 0.6 (c) 0.593 (d) 0.033
  13. 13.7.96 + 7.1 = ? (a) 15.16 (b) 14.96 (c) 15.06 (d) 8.67
  14. 14.1.61 + 5.9 = ? (a) 2.2 (b) 7.41 (c) 7.61 (d) 7.51
  15. 15.3.29 + 4.9 = ? (a) 8.19 (b) 8.09 (c) 3.78 (d) 8.29
  16. 16.What is the value of the digit 2 in 85.261? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  17. 17.Which is the smallest: 0.074, 0.65, 0.545, 0.6? (a) 0.074 (b) 0.65 (c) 0.545 (d) 0.6
  18. 18.Which is the greatest: 0.69, 0.033, 0.6, 0.582? (a) 0.69 (b) 0.033 (c) 0.6 (d) 0.582
  19. 19.Which is the greatest: 0.43, 0.334, 0.4, 0.043? (a) 0.43 (b) 0.334 (c) 0.4 (d) 0.043
  20. 20.What is the value of the digit 5 in 38.159? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  21. 21.9.66 + 9.8 = ? (a) 19.36 (b) 10.64 (c) 19.46 (d) 19.56
  22. 22.8.97 + 6.3 = ? (a) 9.6 (b) 15.27 (c) 15.17 (d) 15.37
  23. 23.Which is the greatest: 0.45, 0.025, 0.368, 0.4? (a) 0.45 (b) 0.025 (c) 0.368 (d) 0.4
  24. 24.9.46 + 2.1 = ? (a) 11.66 (b) 11.46 (c) 9.67 (d) 11.56
  25. 25.Which is the smallest: 0.33, 0.214, 0.3, 0.016? (a) 0.33 (b) 0.214 (c) 0.3 (d) 0.016
  26. 26.2.46 + 2.3 = ? (a) 4.86 (b) 4.66 (c) 2.69 (d) 4.76
  27. 27.7.31 + 6.9 = ? (a) 14.11 (b) 14.31 (c) 8 (d) 14.21
  28. 28.4.01 + 8.4 = ? (a) 12.41 (b) 4.85 (c) 12.51 (d) 12.31
  29. 29.Which is the smallest: 0.663, 0.7, 0.085, 0.74? (a) 0.663 (b) 0.7 (c) 0.085 (d) 0.74
  30. 30.4.99 + 8.2 = ? (a) 13.09 (b) 5.81 (c) 13.19 (d) 13.29
  31. 31.4.51 + 4.3 = ? (a) 8.81 (b) 4.94 (c) 8.71 (d) 8.91
  32. 32.Which is the smallest: 0.34, 0.294, 0.3, 0.031? (a) 0.34 (b) 0.294 (c) 0.3 (d) 0.031
  33. 33.3.75 + 6.8 = ? (a) 10.65 (b) 10.55 (c) 4.43 (d) 10.45
  34. 34.Which is the greatest: 0.092, 0.373, 0.4, 0.42? (a) 0.092 (b) 0.373 (c) 0.4 (d) 0.42
  35. 35.3.51 + 4.1 = ? (a) 7.61 (b) 7.71 (c) 3.92 (d) 7.51
  36. 36.Which is the greatest: 0.437, 0.052, 0.52, 0.5? (a) 0.437 (b) 0.052 (c) 0.52 (d) 0.5
  37. 37.Which is the greatest: 0.2, 0.196, 0.21, 0.044? (a) 0.2 (b) 0.196 (c) 0.21 (d) 0.044
  38. 38.Which is the greatest: 0.5, 0.457, 0.53, 0.035? (a) 0.5 (b) 0.457 (c) 0.53 (d) 0.035
  39. 39.2.04 + 9.2 = ? (a) 11.34 (b) 2.96 (c) 11.24 (d) 11.14
  40. 40.Which is the smallest: 0.77, 0.677, 0.7, 0.028? (a) 0.77 (b) 0.677 (c) 0.7 (d) 0.028

Answer key

  1. 0.1
  2. 8.99
  3. 0.22
  4. 0.021
  5. 5
  6. 11.74
  7. 0.044
  8. 11.17
  9. 0.34
  10. 0.087
  11. 10.98
  12. 0.033
  13. 15.06
  14. 7.51
  15. 8.19
  16. 0.2
  17. 0.074
  18. 0.69
  19. 0.43
  20. 0.05
  21. 19.46
  22. 15.27
  23. 0.45
  24. 11.56
  25. 0.016
  26. 4.76
  27. 14.21
  28. 12.41
  29. 0.085
  30. 13.19
  31. 8.81
  32. 0.031
  33. 10.55
  34. 0.42
  35. 7.61
  36. 0.52
  37. 0.21
  38. 0.53
  39. 11.24
  40. 0.028

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