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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 877 · 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. 1.9.74 + 7.5 = ? (a) 17.34 (b) 10.49 (c) 17.24 (d) 17.14
  2. 2.Which is the greatest: 0.5, 0.57, 0.452, 0.044? (a) 0.5 (b) 0.57 (c) 0.452 (d) 0.044
  3. 3.3.55 + 1.7 = ? (a) 5.25 (b) 5.15 (c) 3.72 (d) 5.35
  4. 4.Which is the smallest: 0.385, 0.029, 0.42, 0.4? (a) 0.385 (b) 0.029 (c) 0.42 (d) 0.4
  5. 5.1.43 + 7.3 = ? (a) 8.83 (b) 8.73 (c) 8.63 (d) 2.16
  6. 6.3.16 + 8.8 = ? (a) 11.96 (b) 11.86 (c) 4.04 (d) 12.06
  7. 7.What is the value of the digit 5 in 27.569? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  8. 8.What is the value of the digit 7 in 79.621? (a) 0.07 (b) 7 (c) 70 (d) 0.7
  9. 9.What is the value of the digit 2 in 64.273? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  10. 10.2.48 + 7.6 = ? (a) 9.98 (b) 3.24 (c) 10.18 (d) 10.08
  11. 11.What is the value of the digit 2 in 76.892? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  12. 12.Which is the greatest: 0.095, 0.73, 0.7, 0.614? (a) 0.095 (b) 0.73 (c) 0.7 (d) 0.614
  13. 13.What is the value of the digit 1 in 81.674? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  14. 14.9.31 + 4.4 = ? (a) 13.61 (b) 13.71 (c) 9.75 (d) 13.81
  15. 15.What is the value of the digit 2 in 72.356? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  16. 16.What is the value of the digit 8 in 81.327? (a) 80 (b) 0.8 (c) 8 (d) 0.08
  17. 17.Which is the smallest: 0.26, 0.2, 0.151, 0.067? (a) 0.26 (b) 0.2 (c) 0.151 (d) 0.067
  18. 18.1.19 + 3.8 = ? (a) 4.89 (b) 4.99 (c) 1.57 (d) 5.09
  19. 19.Which is the smallest: 0.82, 0.739, 0.032, 0.8? (a) 0.82 (b) 0.739 (c) 0.032 (d) 0.8
  20. 20.What is the value of the digit 4 in 84.391? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  21. 21.Which is the smallest: 0.454, 0.017, 0.5, 0.53? (a) 0.454 (b) 0.017 (c) 0.5 (d) 0.53
  22. 22.What is the value of the digit 6 in 25.416? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  23. 23.What is the value of the digit 8 in 86.459? (a) 80 (b) 0.8 (c) 8 (d) 0.08
  24. 24.5.99 + 4.4 = ? (a) 10.49 (b) 6.43 (c) 10.29 (d) 10.39
  25. 25.What is the value of the digit 2 in 79.312? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  26. 26.What is the value of the digit 3 in 46.513? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  27. 27.What is the value of the digit 3 in 28.163? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  28. 28.What is the value of the digit 6 in 16.549? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  29. 29.What is the value of the digit 1 in 81.659? (a) 10 (b) 0.01 (c) 1 (d) 0.1
  30. 30.9.26 + 4.9 = ? (a) 14.06 (b) 9.75 (c) 14.26 (d) 14.16
  31. 31.Which is the smallest: 0.065, 0.8, 0.797, 0.82? (a) 0.065 (b) 0.8 (c) 0.797 (d) 0.82
  32. 32.What is the value of the digit 8 in 81.624? (a) 0.8 (b) 0.08 (c) 8 (d) 80
  33. 33.8.65 + 9.1 = ? (a) 9.56 (b) 17.85 (c) 17.65 (d) 17.75
  34. 34.5.52 + 8.1 = ? (a) 6.33 (b) 13.52 (c) 13.72 (d) 13.62
  35. 35.8.05 + 2.3 = ? (a) 10.25 (b) 10.45 (c) 8.28 (d) 10.35
  36. 36.What is the value of the digit 4 in 95.148? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  37. 37.Which is the greatest: 0.2, 0.093, 0.22, 0.147? (a) 0.2 (b) 0.093 (c) 0.22 (d) 0.147
  38. 38.What is the value of the digit 5 in 28.745? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  39. 39.What is the value of the digit 9 in 94.376? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  40. 40.What is the value of the digit 2 in 12.684? (a) 0.2 (b) 2 (c) 20 (d) 0.02

Answer key

  1. 17.24
  2. 0.57
  3. 5.25
  4. 0.029
  5. 8.73
  6. 11.96
  7. 0.5
  8. 70
  9. 0.2
  10. 10.08
  11. 0.002
  12. 0.73
  13. 1
  14. 13.71
  15. 2
  16. 80
  17. 0.067
  18. 4.99
  19. 0.032
  20. 4
  21. 0.017
  22. 0.006
  23. 80
  24. 10.39
  25. 0.002
  26. 0.003
  27. 0.003
  28. 6
  29. 1
  30. 14.16
  31. 0.065
  32. 80
  33. 17.75
  34. 13.62
  35. 10.35
  36. 0.04
  37. 0.22
  38. 0.005
  39. 90
  40. 2

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