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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 901 · 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.Which is the smallest: 0.56, 0.079, 0.5, 0.488? (a) 0.56 (b) 0.079 (c) 0.5 (d) 0.488
  2. 2.1.21 + 9.4 = ? (a) 10.61 (b) 10.71 (c) 10.51 (d) 2.15
  3. 3.3.92 + 1.2 = ? (a) 5.22 (b) 5.02 (c) 4.04 (d) 5.12
  4. 4.9.22 + 5.1 = ? (a) 14.32 (b) 14.22 (c) 14.42 (d) 9.73
  5. 5.What is the value of the digit 6 in 71.635? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  6. 6.What is the value of the digit 4 in 69.241? (a) 0.004 (b) 4 (c) 0.4 (d) 0.04
  7. 7.What is the value of the digit 5 in 13.458? (a) 0.5 (b) 0.005 (c) 5 (d) 0.05
  8. 8.9.45 + 9.2 = ? (a) 18.75 (b) 18.65 (c) 10.37 (d) 18.55
  9. 9.Which is the smallest: 0.41, 0.367, 0.4, 0.013? (a) 0.41 (b) 0.367 (c) 0.4 (d) 0.013
  10. 10.What is the value of the digit 4 in 43.518? (a) 4 (b) 0.04 (c) 0.4 (d) 40
  11. 11.What is the value of the digit 5 in 43.625? (a) 0.05 (b) 5 (c) 0.005 (d) 0.5
  12. 12.6.61 + 7.5 = ? (a) 14.11 (b) 14.21 (c) 7.36 (d) 14.01
  13. 13.Which is the greatest: 0.455, 0.5, 0.52, 0.096? (a) 0.455 (b) 0.5 (c) 0.52 (d) 0.096
  14. 14.Which is the greatest: 0.041, 0.5, 0.59, 0.474? (a) 0.041 (b) 0.5 (c) 0.59 (d) 0.474
  15. 15.Which is the greatest: 0.058, 0.84, 0.731, 0.8? (a) 0.058 (b) 0.84 (c) 0.731 (d) 0.8
  16. 16.4.53 + 6.7 = ? (a) 11.33 (b) 11.13 (c) 11.23 (d) 5.2
  17. 17.What is the value of the digit 1 in 82.145? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  18. 18.Which is the smallest: 0.6, 0.062, 0.66, 0.558? (a) 0.6 (b) 0.062 (c) 0.66 (d) 0.558
  19. 19.6.86 + 1.9 = ? (a) 8.86 (b) 8.76 (c) 8.66 (d) 7.05
  20. 20.What is the value of the digit 6 in 67.918? (a) 6 (b) 60 (c) 0.06 (d) 0.6
  21. 21.7.88 + 1.1 = ? (a) 7.99 (b) 8.88 (c) 8.98 (d) 9.08
  22. 22.Which is the smallest: 0.69, 0.084, 0.6, 0.511? (a) 0.69 (b) 0.084 (c) 0.6 (d) 0.511
  23. 23.Which is the greatest: 0.071, 0.45, 0.329, 0.4? (a) 0.071 (b) 0.45 (c) 0.329 (d) 0.4
  24. 24.What is the value of the digit 5 in 48.152? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  25. 25.What is the value of the digit 4 in 16.324? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  26. 26.Which is the greatest: 0.016, 0.3, 0.292, 0.33? (a) 0.016 (b) 0.3 (c) 0.292 (d) 0.33
  27. 27.8.62 + 8.4 = ? (a) 9.46 (b) 17.02 (c) 16.92 (d) 17.12
  28. 28.What is the value of the digit 5 in 71.258? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  29. 29.6.72 + 8.7 = ? (a) 15.52 (b) 7.59 (c) 15.32 (d) 15.42
  30. 30.Which is the smallest: 0.637, 0.72, 0.098, 0.7? (a) 0.637 (b) 0.72 (c) 0.098 (d) 0.7
  31. 31.4.36 + 6.5 = ? (a) 10.76 (b) 5.01 (c) 10.86 (d) 10.96
  32. 32.What is the value of the digit 4 in 96.432? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  33. 33.6.94 + 2.6 = ? (a) 9.64 (b) 9.44 (c) 9.54 (d) 7.2
  34. 34.What is the value of the digit 1 in 43.175? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  35. 35.6.11 + 6.5 = ? (a) 12.61 (b) 12.71 (c) 12.51 (d) 6.76
  36. 36.Which is the smallest: 0.218, 0.3, 0.028, 0.37? (a) 0.218 (b) 0.3 (c) 0.028 (d) 0.37
  37. 37.3.28 + 5.4 = ? (a) 3.82 (b) 8.78 (c) 8.58 (d) 8.68
  38. 38.Which is the greatest: 0.012, 0.27, 0.2, 0.127? (a) 0.012 (b) 0.27 (c) 0.2 (d) 0.127
  39. 39.2.49 + 2.1 = ? (a) 4.69 (b) 4.59 (c) 4.49 (d) 2.7
  40. 40.Which is the greatest: 0.32, 0.3, 0.097, 0.231? (a) 0.32 (b) 0.3 (c) 0.097 (d) 0.231

Answer key

  1. 0.079
  2. 10.61
  3. 5.12
  4. 14.32
  5. 0.6
  6. 0.04
  7. 0.05
  8. 18.65
  9. 0.013
  10. 40
  11. 0.005
  12. 14.11
  13. 0.52
  14. 0.59
  15. 0.84
  16. 11.23
  17. 0.1
  18. 0.062
  19. 8.76
  20. 60
  21. 8.98
  22. 0.084
  23. 0.45
  24. 0.05
  25. 0.004
  26. 0.33
  27. 17.02
  28. 0.05
  29. 15.42
  30. 0.098
  31. 10.86
  32. 0.4
  33. 9.54
  34. 0.1
  35. 12.61
  36. 0.028
  37. 8.68
  38. 0.27
  39. 4.59
  40. 0.32

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