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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 241 · 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. 1.1.74 + 4.8 = ? (a) 6.64 (b) 6.44 (c) 2.22 (d) 6.54
  2. 2.What is the value of the digit 8 in 81.437? (a) 80 (b) 8 (c) 0.08 (d) 0.8
  3. 3.What is the value of the digit 7 in 46.957? (a) 0.7 (b) 0.07 (c) 0.007 (d) 7
  4. 4.What is the value of the digit 6 in 98.263? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  5. 5.Which is the smallest: 0.035, 0.144, 0.2, 0.27? (a) 0.035 (b) 0.144 (c) 0.2 (d) 0.27
  6. 6.5.57 + 9.5 = ? (a) 15.17 (b) 6.52 (c) 14.97 (d) 15.07
  7. 7.What is the value of the digit 7 in 91.437? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  8. 8.3.51 + 1.4 = ? (a) 3.65 (b) 5.01 (c) 4.91 (d) 4.81
  9. 9.What is the value of the digit 7 in 98.174? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  10. 10.Which is the smallest: 0.8, 0.011, 0.82, 0.781? (a) 0.8 (b) 0.011 (c) 0.82 (d) 0.781
  11. 11.What is the value of the digit 8 in 82.173? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  12. 12.9.16 + 3.3 = ? (a) 12.46 (b) 12.56 (c) 9.49 (d) 12.36
  13. 13.9.02 + 6.5 = ? (a) 15.62 (b) 9.67 (c) 15.52 (d) 15.42
  14. 14.5.89 + 4.9 = ? (a) 10.89 (b) 10.69 (c) 6.38 (d) 10.79
  15. 15.4.11 + 8.1 = ? (a) 12.21 (b) 4.92 (c) 12.11 (d) 12.31
  16. 16.1.86 + 2.5 = ? (a) 2.11 (b) 4.36 (c) 4.46 (d) 4.26
  17. 17.5.94 + 2.7 = ? (a) 6.21 (b) 8.74 (c) 8.54 (d) 8.64
  18. 18.What is the value of the digit 8 in 84.965? (a) 80 (b) 0.08 (c) 0.8 (d) 8
  19. 19.What is the value of the digit 7 in 27.194? (a) 0.7 (b) 70 (c) 7 (d) 0.07
  20. 20.Which is the smallest: 0.32, 0.241, 0.3, 0.021? (a) 0.32 (b) 0.241 (c) 0.3 (d) 0.021
  21. 21.Which is the smallest: 0.41, 0.4, 0.082, 0.323? (a) 0.41 (b) 0.4 (c) 0.082 (d) 0.323
  22. 22.Which is the greatest: 0.058, 0.572, 0.69, 0.6? (a) 0.058 (b) 0.572 (c) 0.69 (d) 0.6
  23. 23.Which is the smallest: 0.21, 0.068, 0.2, 0.171? (a) 0.21 (b) 0.068 (c) 0.2 (d) 0.171
  24. 24.6.85 + 4.6 = ? (a) 7.31 (b) 11.45 (c) 11.35 (d) 11.55
  25. 25.4.14 + 3.1 = ? (a) 7.34 (b) 7.14 (c) 7.24 (d) 4.45
  26. 26.1.41 + 4.1 = ? (a) 1.82 (b) 5.61 (c) 5.41 (d) 5.51
  27. 27.8.21 + 4.1 = ? (a) 8.62 (b) 12.21 (c) 12.41 (d) 12.31
  28. 28.7.22 + 8.1 = ? (a) 15.22 (b) 15.32 (c) 15.42 (d) 8.03
  29. 29.5.31 + 9.4 = ? (a) 14.71 (b) 6.25 (c) 14.81 (d) 14.61
  30. 30.What is the value of the digit 9 in 98.764? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  31. 31.1.71 + 4.1 = ? (a) 5.91 (b) 5.81 (c) 2.12 (d) 5.71
  32. 32.What is the value of the digit 8 in 72.894? (a) 8 (b) 0.08 (c) 0.8 (d) 0.008
  33. 33.3.62 + 2.4 = ? (a) 6.02 (b) 3.86 (c) 6.12 (d) 5.92
  34. 34.What is the value of the digit 8 in 94.285? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  35. 35.2.61 + 4.6 = ? (a) 3.07 (b) 7.11 (c) 7.31 (d) 7.21
  36. 36.Which is the smallest: 0.023, 0.54, 0.473, 0.5? (a) 0.023 (b) 0.54 (c) 0.473 (d) 0.5
  37. 37.Which is the smallest: 0.5, 0.074, 0.439, 0.51? (a) 0.5 (b) 0.074 (c) 0.439 (d) 0.51
  38. 38.What is the value of the digit 8 in 27.381? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  39. 39.Which is the greatest: 0.6, 0.62, 0.521, 0.065? (a) 0.6 (b) 0.62 (c) 0.521 (d) 0.065
  40. 40.3.05 + 8.1 = ? (a) 11.15 (b) 3.86 (c) 11.25 (d) 11.05

Answer key

  1. 6.54
  2. 80
  3. 0.007
  4. 0.06
  5. 0.035
  6. 15.07
  7. 0.007
  8. 4.91
  9. 0.07
  10. 0.011
  11. 80
  12. 12.46
  13. 15.52
  14. 10.79
  15. 12.21
  16. 4.36
  17. 8.64
  18. 80
  19. 7
  20. 0.021
  21. 0.082
  22. 0.69
  23. 0.068
  24. 11.45
  25. 7.24
  26. 5.51
  27. 12.31
  28. 15.32
  29. 14.71
  30. 90
  31. 5.81
  32. 0.8
  33. 6.02
  34. 0.08
  35. 7.21
  36. 0.023
  37. 0.074
  38. 0.08
  39. 0.62
  40. 11.15

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