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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 407 · 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. 1.4.01 + 9.9 = ? (a) 13.81 (b) 5 (c) 14.01 (d) 13.91
  2. 2.6.04 + 2.3 = ? (a) 6.27 (b) 8.34 (c) 8.44 (d) 8.24
  3. 3.What is the value of the digit 5 in 56.274? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  4. 4.Which is the greatest: 0.33, 0.069, 0.239, 0.3? (a) 0.33 (b) 0.069 (c) 0.239 (d) 0.3
  5. 5.What is the value of the digit 5 in 79.458? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  6. 6.Which is the greatest: 0.041, 0.449, 0.58, 0.5? (a) 0.041 (b) 0.449 (c) 0.58 (d) 0.5
  7. 7.What is the value of the digit 4 in 17.342? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  8. 8.Which is the greatest: 0.82, 0.032, 0.736, 0.8? (a) 0.82 (b) 0.032 (c) 0.736 (d) 0.8
  9. 9.Which is the smallest: 0.7, 0.691, 0.077, 0.79? (a) 0.7 (b) 0.691 (c) 0.077 (d) 0.79
  10. 10.3.43 + 6.4 = ? (a) 9.83 (b) 9.93 (c) 4.07 (d) 9.73
  11. 11.Which is the smallest: 0.33, 0.216, 0.3, 0.089? (a) 0.33 (b) 0.216 (c) 0.3 (d) 0.089
  12. 12.What is the value of the digit 8 in 38.579? (a) 80 (b) 0.8 (c) 0.08 (d) 8
  13. 13.What is the value of the digit 2 in 34.172? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  14. 14.Which is the greatest: 0.671, 0.097, 0.7, 0.76? (a) 0.671 (b) 0.097 (c) 0.7 (d) 0.76
  15. 15.Which is the greatest: 0.032, 0.55, 0.453, 0.5? (a) 0.032 (b) 0.55 (c) 0.453 (d) 0.5
  16. 16.Which is the smallest: 0.028, 0.6, 0.65, 0.515? (a) 0.028 (b) 0.6 (c) 0.65 (d) 0.515
  17. 17.2.31 + 7.9 = ? (a) 10.21 (b) 10.11 (c) 3.1 (d) 10.31
  18. 18.3.22 + 2.1 = ? (a) 5.42 (b) 5.22 (c) 3.43 (d) 5.32
  19. 19.Which is the smallest: 0.57, 0.5, 0.459, 0.046? (a) 0.57 (b) 0.5 (c) 0.459 (d) 0.046
  20. 20.Which is the greatest: 0.52, 0.423, 0.5, 0.094? (a) 0.52 (b) 0.423 (c) 0.5 (d) 0.094
  21. 21.9.48 + 3.5 = ? (a) 12.88 (b) 12.98 (c) 13.08 (d) 9.83
  22. 22.Which is the smallest: 0.26, 0.196, 0.094, 0.2? (a) 0.26 (b) 0.196 (c) 0.094 (d) 0.2
  23. 23.Which is the smallest: 0.5, 0.453, 0.046, 0.52? (a) 0.5 (b) 0.453 (c) 0.046 (d) 0.52
  24. 24.Which is the greatest: 0.351, 0.4, 0.077, 0.46? (a) 0.351 (b) 0.4 (c) 0.077 (d) 0.46
  25. 25.Which is the smallest: 0.514, 0.63, 0.018, 0.6? (a) 0.514 (b) 0.63 (c) 0.018 (d) 0.6
  26. 26.What is the value of the digit 9 in 64.392? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  27. 27.Which is the smallest: 0.81, 0.043, 0.731, 0.8? (a) 0.81 (b) 0.043 (c) 0.731 (d) 0.8
  28. 28.What is the value of the digit 5 in 57.318? (a) 0.5 (b) 50 (c) 5 (d) 0.05
  29. 29.1.21 + 4.3 = ? (a) 5.61 (b) 5.51 (c) 5.41 (d) 1.64
  30. 30.9.48 + 7.7 = ? (a) 10.25 (b) 17.08 (c) 17.18 (d) 17.28
  31. 31.9.55 + 4.2 = ? (a) 9.97 (b) 13.65 (c) 13.85 (d) 13.75
  32. 32.Which is the smallest: 0.096, 0.39, 0.3, 0.267? (a) 0.096 (b) 0.39 (c) 0.3 (d) 0.267
  33. 33.What is the value of the digit 3 in 36.128? (a) 3 (b) 0.03 (c) 0.3 (d) 30
  34. 34.2.11 + 7.7 = ? (a) 9.71 (b) 9.81 (c) 2.88 (d) 9.91
  35. 35.What is the value of the digit 4 in 14.783? (a) 40 (b) 4 (c) 0.04 (d) 0.4
  36. 36.2.52 + 2.6 = ? (a) 2.78 (b) 5.02 (c) 5.22 (d) 5.12
  37. 37.3.43 + 8.1 = ? (a) 11.63 (b) 4.24 (c) 11.53 (d) 11.43
  38. 38.Which is the greatest: 0.79, 0.684, 0.7, 0.057? (a) 0.79 (b) 0.684 (c) 0.7 (d) 0.057
  39. 39.What is the value of the digit 1 in 14.785? (a) 10 (b) 1 (c) 0.1 (d) 0.01
  40. 40.Which is the smallest: 0.232, 0.37, 0.078, 0.3? (a) 0.232 (b) 0.37 (c) 0.078 (d) 0.3

Answer key

  1. 13.91
  2. 8.34
  3. 50
  4. 0.33
  5. 0.05
  6. 0.58
  7. 0.04
  8. 0.82
  9. 0.077
  10. 9.83
  11. 0.089
  12. 8
  13. 0.002
  14. 0.76
  15. 0.55
  16. 0.028
  17. 10.21
  18. 5.32
  19. 0.046
  20. 0.52
  21. 12.98
  22. 0.094
  23. 0.046
  24. 0.46
  25. 0.018
  26. 0.09
  27. 0.043
  28. 50
  29. 5.51
  30. 17.18
  31. 13.75
  32. 0.096
  33. 30
  34. 9.81
  35. 4
  36. 5.12
  37. 11.53
  38. 0.79
  39. 10
  40. 0.078

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