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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 895 · 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. 1.6.07 + 4.1 = ? (a) 10.07 (b) 6.48 (c) 10.27 (d) 10.17
  2. 2.Which is the greatest: 0.065, 0.23, 0.2, 0.124? (a) 0.065 (b) 0.23 (c) 0.2 (d) 0.124
  3. 3.Which is the greatest: 0.139, 0.2, 0.24, 0.091? (a) 0.139 (b) 0.2 (c) 0.24 (d) 0.091
  4. 4.1.04 + 4.8 = ? (a) 5.74 (b) 1.52 (c) 5.94 (d) 5.84
  5. 5.Which is the smallest: 0.84, 0.8, 0.711, 0.053? (a) 0.84 (b) 0.8 (c) 0.711 (d) 0.053
  6. 6.3.11 + 4.1 = ? (a) 7.21 (b) 3.52 (c) 7.31 (d) 7.11
  7. 7.8.35 + 5.4 = ? (a) 8.89 (b) 13.85 (c) 13.65 (d) 13.75
  8. 8.3.81 + 7.2 = ? (a) 10.91 (b) 11.11 (c) 4.53 (d) 11.01
  9. 9.7.14 + 2.1 = ? (a) 9.34 (b) 9.14 (c) 7.35 (d) 9.24
  10. 10.Which is the greatest: 0.099, 0.567, 0.69, 0.6? (a) 0.099 (b) 0.567 (c) 0.69 (d) 0.6
  11. 11.Which is the greatest: 0.087, 0.351, 0.43, 0.4? (a) 0.087 (b) 0.351 (c) 0.43 (d) 0.4
  12. 12.3.22 + 1.4 = ? (a) 4.52 (b) 4.62 (c) 3.36 (d) 4.72
  13. 13.1.78 + 3.9 = ? (a) 5.58 (b) 5.78 (c) 2.17 (d) 5.68
  14. 14.6.38 + 2.3 = ? (a) 8.78 (b) 8.58 (c) 8.68 (d) 6.61
  15. 15.2.94 + 9.8 = ? (a) 12.84 (b) 3.92 (c) 12.64 (d) 12.74
  16. 16.3.52 + 4.1 = ? (a) 3.93 (b) 7.72 (c) 7.52 (d) 7.62
  17. 17.Which is the smallest: 0.81, 0.065, 0.784, 0.8? (a) 0.81 (b) 0.065 (c) 0.784 (d) 0.8
  18. 18.What is the value of the digit 2 in 68.542? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  19. 19.8.33 + 2.1 = ? (a) 10.53 (b) 10.33 (c) 10.43 (d) 8.54
  20. 20.Which is the greatest: 0.36, 0.245, 0.094, 0.3? (a) 0.36 (b) 0.245 (c) 0.094 (d) 0.3
  21. 21.2.52 + 1.9 = ? (a) 4.32 (b) 4.52 (c) 2.71 (d) 4.42
  22. 22.7.11 + 2.6 = ? (a) 9.61 (b) 9.71 (c) 7.37 (d) 9.81
  23. 23.2.58 + 5.3 = ? (a) 7.88 (b) 7.98 (c) 3.11 (d) 7.78
  24. 24.1.61 + 3.2 = ? (a) 4.71 (b) 1.93 (c) 4.91 (d) 4.81
  25. 25.Which is the smallest: 0.5, 0.033, 0.57, 0.433? (a) 0.5 (b) 0.033 (c) 0.57 (d) 0.433
  26. 26.7.96 + 4.1 = ? (a) 8.37 (b) 12.16 (c) 11.96 (d) 12.06
  27. 27.What is the value of the digit 7 in 57.891? (a) 0.07 (b) 7 (c) 0.7 (d) 70
  28. 28.What is the value of the digit 9 in 98.613? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  29. 29.Which is the greatest: 0.633, 0.085, 0.72, 0.7? (a) 0.633 (b) 0.085 (c) 0.72 (d) 0.7
  30. 30.Which is the smallest: 0.081, 0.5, 0.59, 0.414? (a) 0.081 (b) 0.5 (c) 0.59 (d) 0.414
  31. 31.5.91 + 6.9 = ? (a) 12.81 (b) 12.91 (c) 12.71 (d) 6.6
  32. 32.1.92 + 8.6 = ? (a) 10.42 (b) 10.62 (c) 10.52 (d) 2.78
  33. 33.What is the value of the digit 5 in 91.457? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  34. 34.What is the value of the digit 3 in 45.783? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  35. 35.What is the value of the digit 7 in 73.581? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  36. 36.9.01 + 8.3 = ? (a) 9.84 (b) 17.31 (c) 17.21 (d) 17.41
  37. 37.Which is the smallest: 0.023, 0.576, 0.6, 0.68? (a) 0.023 (b) 0.576 (c) 0.6 (d) 0.68
  38. 38.8.67 + 9.6 = ? (a) 18.37 (b) 18.17 (c) 9.63 (d) 18.27
  39. 39.Which is the greatest: 0.026, 0.243, 0.3, 0.31? (a) 0.026 (b) 0.243 (c) 0.3 (d) 0.31
  40. 40.Which is the smallest: 0.042, 0.319, 0.4, 0.43? (a) 0.042 (b) 0.319 (c) 0.4 (d) 0.43

Answer key

  1. 10.17
  2. 0.23
  3. 0.24
  4. 5.84
  5. 0.053
  6. 7.21
  7. 13.75
  8. 11.01
  9. 9.24
  10. 0.69
  11. 0.43
  12. 4.62
  13. 5.68
  14. 8.68
  15. 12.74
  16. 7.62
  17. 0.065
  18. 0.002
  19. 10.43
  20. 0.36
  21. 4.42
  22. 9.71
  23. 7.88
  24. 4.81
  25. 0.033
  26. 12.06
  27. 7
  28. 90
  29. 0.72
  30. 0.081
  31. 12.81
  32. 10.52
  33. 0.05
  34. 0.003
  35. 70
  36. 17.31
  37. 0.023
  38. 18.27
  39. 0.31
  40. 0.042

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