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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 3 · 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. 1.5.43 + 9.1 = ? (a) 14.63 (b) 6.34 (c) 14.53 (d) 14.43
  2. 2.3.86 + 2.8 = ? (a) 4.14 (b) 6.76 (c) 6.56 (d) 6.66
  3. 3.8.29 + 8.4 = ? (a) 16.69 (b) 9.13 (c) 16.59 (d) 16.79
  4. 4.What is the value of the digit 5 in 91.853? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  5. 5.5.06 + 5.4 = ? (a) 5.6 (b) 10.36 (c) 10.46 (d) 10.56
  6. 6.Which is the smallest: 0.7, 0.021, 0.76, 0.634? (a) 0.7 (b) 0.021 (c) 0.76 (d) 0.634
  7. 7.1.72 + 6.9 = ? (a) 8.72 (b) 8.52 (c) 2.41 (d) 8.62
  8. 8.1.33 + 1.4 = ? (a) 2.83 (b) 2.73 (c) 1.47 (d) 2.63
  9. 9.What is the value of the digit 3 in 71.932? (a) 0.03 (b) 0.003 (c) 0.3 (d) 3
  10. 10.Which is the greatest: 0.392, 0.46, 0.4, 0.037? (a) 0.392 (b) 0.46 (c) 0.4 (d) 0.037
  11. 11.What is the value of the digit 1 in 41.732? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  12. 12.What is the value of the digit 1 in 14.357? (a) 10 (b) 0.1 (c) 1 (d) 0.01
  13. 13.3.64 + 8.1 = ? (a) 4.45 (b) 11.74 (c) 11.84 (d) 11.64
  14. 14.Which is the smallest: 0.4, 0.071, 0.47, 0.359? (a) 0.4 (b) 0.071 (c) 0.47 (d) 0.359
  15. 15.2.97 + 8.6 = ? (a) 11.67 (b) 11.47 (c) 11.57 (d) 3.83
  16. 16.Which is the greatest: 0.3, 0.32, 0.242, 0.051? (a) 0.3 (b) 0.32 (c) 0.242 (d) 0.051
  17. 17.Which is the greatest: 0.42, 0.048, 0.4, 0.338? (a) 0.42 (b) 0.048 (c) 0.4 (d) 0.338
  18. 18.What is the value of the digit 8 in 68.231? (a) 80 (b) 0.08 (c) 0.8 (d) 8
  19. 19.Which is the greatest: 0.079, 0.3, 0.261, 0.36? (a) 0.079 (b) 0.3 (c) 0.261 (d) 0.36
  20. 20.Which is the smallest: 0.36, 0.3, 0.049, 0.283? (a) 0.36 (b) 0.3 (c) 0.049 (d) 0.283
  21. 21.Which is the smallest: 0.24, 0.126, 0.022, 0.2? (a) 0.24 (b) 0.126 (c) 0.022 (d) 0.2
  22. 22.Which is the smallest: 0.751, 0.85, 0.075, 0.8? (a) 0.751 (b) 0.85 (c) 0.075 (d) 0.8
  23. 23.Which is the smallest: 0.627, 0.77, 0.085, 0.7? (a) 0.627 (b) 0.77 (c) 0.085 (d) 0.7
  24. 24.Which is the greatest: 0.486, 0.5, 0.069, 0.57? (a) 0.486 (b) 0.5 (c) 0.069 (d) 0.57
  25. 25.What is the value of the digit 7 in 47.829? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  26. 26.6.98 + 3.2 = ? (a) 10.28 (b) 7.3 (c) 10.08 (d) 10.18
  27. 27.Which is the smallest: 0.26, 0.091, 0.2, 0.153? (a) 0.26 (b) 0.091 (c) 0.2 (d) 0.153
  28. 28.3.84 + 1.7 = ? (a) 5.64 (b) 4.01 (c) 5.54 (d) 5.44
  29. 29.8.71 + 9.5 = ? (a) 18.21 (b) 18.11 (c) 9.66 (d) 18.31
  30. 30.1.65 + 3.1 = ? (a) 1.96 (b) 4.85 (c) 4.65 (d) 4.75
  31. 31.Which is the greatest: 0.2, 0.152, 0.011, 0.29? (a) 0.2 (b) 0.152 (c) 0.011 (d) 0.29
  32. 32.Which is the greatest: 0.22, 0.168, 0.036, 0.2? (a) 0.22 (b) 0.168 (c) 0.036 (d) 0.2
  33. 33.What is the value of the digit 3 in 89.473? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  34. 34.2.21 + 9.1 = ? (a) 11.31 (b) 11.21 (c) 3.12 (d) 11.41
  35. 35.What is the value of the digit 5 in 91.572? (a) 0.5 (b) 0.005 (c) 0.05 (d) 5
  36. 36.Which is the smallest: 0.612, 0.037, 0.7, 0.72? (a) 0.612 (b) 0.037 (c) 0.7 (d) 0.72
  37. 37.What is the value of the digit 2 in 63.271? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  38. 38.What is the value of the digit 2 in 78.234? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  39. 39.2.22 + 4.2 = ? (a) 2.64 (b) 6.42 (c) 6.32 (d) 6.52
  40. 40.1.17 + 1.7 = ? (a) 2.87 (b) 2.77 (c) 1.34 (d) 2.97

Answer key

  1. 14.53
  2. 6.66
  3. 16.69
  4. 0.05
  5. 10.46
  6. 0.021
  7. 8.62
  8. 2.73
  9. 0.03
  10. 0.46
  11. 1
  12. 10
  13. 11.74
  14. 0.071
  15. 11.57
  16. 0.32
  17. 0.42
  18. 8
  19. 0.36
  20. 0.049
  21. 0.022
  22. 0.075
  23. 0.085
  24. 0.57
  25. 7
  26. 10.18
  27. 0.091
  28. 5.54
  29. 18.21
  30. 4.75
  31. 0.29
  32. 0.22
  33. 0.003
  34. 11.31
  35. 0.5
  36. 0.037
  37. 0.2
  38. 0.2
  39. 6.42
  40. 2.87

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