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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 740 · 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 18.257? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  2. 2.Which is the greatest: 0.43, 0.366, 0.043, 0.4? (a) 0.43 (b) 0.366 (c) 0.043 (d) 0.4
  3. 3.9.64 + 3.8 = ? (a) 13.34 (b) 13.44 (c) 13.54 (d) 10.02
  4. 4.Which is the greatest: 0.5, 0.027, 0.442, 0.53? (a) 0.5 (b) 0.027 (c) 0.442 (d) 0.53
  5. 5.6.07 + 8.1 = ? (a) 14.17 (b) 6.88 (c) 14.07 (d) 14.27
  6. 6.What is the value of the digit 8 in 83.219? (a) 8 (b) 0.08 (c) 0.8 (d) 80
  7. 7.What is the value of the digit 4 in 68.149? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  8. 8.4.92 + 1.9 = ? (a) 5.11 (b) 6.72 (c) 6.82 (d) 6.92
  9. 9.9.05 + 9.6 = ? (a) 10.01 (b) 18.55 (c) 18.65 (d) 18.75
  10. 10.4.04 + 9.2 = ? (a) 13.34 (b) 13.24 (c) 13.14 (d) 4.96
  11. 11.8.45 + 4.8 = ? (a) 13.15 (b) 13.35 (c) 13.25 (d) 8.93
  12. 12.What is the value of the digit 4 in 54.621? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  13. 13.Which is the smallest: 0.617, 0.76, 0.7, 0.024? (a) 0.617 (b) 0.76 (c) 0.7 (d) 0.024
  14. 14.2.62 + 2.5 = ? (a) 2.87 (b) 5.22 (c) 5.12 (d) 5.02
  15. 15.2.11 + 3.6 = ? (a) 5.71 (b) 2.47 (c) 5.61 (d) 5.81
  16. 16.Which is the greatest: 0.028, 0.411, 0.5, 0.54? (a) 0.028 (b) 0.411 (c) 0.5 (d) 0.54
  17. 17.Which is the smallest: 0.164, 0.2, 0.052, 0.28? (a) 0.164 (b) 0.2 (c) 0.052 (d) 0.28
  18. 18.8.72 + 7.2 = ? (a) 16.02 (b) 15.82 (c) 15.92 (d) 9.44
  19. 19.5.71 + 3.1 = ? (a) 8.71 (b) 6.02 (c) 8.91 (d) 8.81
  20. 20.Which is the greatest: 0.075, 0.43, 0.392, 0.4? (a) 0.075 (b) 0.43 (c) 0.392 (d) 0.4
  21. 21.8.14 + 6.7 = ? (a) 14.84 (b) 14.94 (c) 8.81 (d) 14.74
  22. 22.8.79 + 3.5 = ? (a) 9.14 (b) 12.39 (c) 12.19 (d) 12.29
  23. 23.Which is the smallest: 0.82, 0.711, 0.061, 0.8? (a) 0.82 (b) 0.711 (c) 0.061 (d) 0.8
  24. 24.Which is the greatest: 0.039, 0.3, 0.34, 0.259? (a) 0.039 (b) 0.3 (c) 0.34 (d) 0.259
  25. 25.2.37 + 6.9 = ? (a) 9.17 (b) 9.37 (c) 3.06 (d) 9.27
  26. 26.9.52 + 2.9 = ? (a) 9.81 (b) 12.52 (c) 12.32 (d) 12.42
  27. 27.Which is the greatest: 0.059, 0.67, 0.6, 0.561? (a) 0.059 (b) 0.67 (c) 0.6 (d) 0.561
  28. 28.Which is the greatest: 0.74, 0.677, 0.7, 0.023? (a) 0.74 (b) 0.677 (c) 0.7 (d) 0.023
  29. 29.Which is the smallest: 0.4, 0.353, 0.41, 0.086? (a) 0.4 (b) 0.353 (c) 0.41 (d) 0.086
  30. 30.Which is the greatest: 0.29, 0.073, 0.2, 0.132? (a) 0.29 (b) 0.073 (c) 0.2 (d) 0.132
  31. 31.What is the value of the digit 3 in 12.483? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  32. 32.Which is the greatest: 0.254, 0.3, 0.056, 0.33? (a) 0.254 (b) 0.3 (c) 0.056 (d) 0.33
  33. 33.9.43 + 8.8 = ? (a) 18.33 (b) 10.31 (c) 18.13 (d) 18.23
  34. 34.2.34 + 4.3 = ? (a) 2.77 (b) 6.54 (c) 6.74 (d) 6.64
  35. 35.5.24 + 7.4 = ? (a) 12.54 (b) 12.74 (c) 12.64 (d) 5.98
  36. 36.Which is the smallest: 0.56, 0.028, 0.471, 0.5? (a) 0.56 (b) 0.028 (c) 0.471 (d) 0.5
  37. 37.Which is the greatest: 0.23, 0.074, 0.193, 0.2? (a) 0.23 (b) 0.074 (c) 0.193 (d) 0.2
  38. 38.Which is the smallest: 0.039, 0.534, 0.6, 0.68? (a) 0.039 (b) 0.534 (c) 0.6 (d) 0.68
  39. 39.1.29 + 2.1 = ? (a) 1.5 (b) 3.29 (c) 3.49 (d) 3.39
  40. 40.What is the value of the digit 1 in 13.478? (a) 10 (b) 1 (c) 0.1 (d) 0.01

Answer key

  1. 10
  2. 0.43
  3. 13.44
  4. 0.53
  5. 14.17
  6. 80
  7. 0.04
  8. 6.82
  9. 18.65
  10. 13.24
  11. 13.25
  12. 4
  13. 0.024
  14. 5.12
  15. 5.71
  16. 0.54
  17. 0.052
  18. 15.92
  19. 8.81
  20. 0.43
  21. 14.84
  22. 12.29
  23. 0.061
  24. 0.34
  25. 9.27
  26. 12.42
  27. 0.67
  28. 0.74
  29. 0.086
  30. 0.29
  31. 0.003
  32. 0.33
  33. 18.23
  34. 6.64
  35. 12.64
  36. 0.028
  37. 0.23
  38. 0.039
  39. 3.39
  40. 10

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