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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 850 · 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. 1.1.63 + 9.9 = ? (a) 11.63 (b) 2.62 (c) 11.53 (d) 11.43
  2. 2.What is the value of the digit 7 in 53.417? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  3. 3.Which is the smallest: 0.264, 0.3, 0.38, 0.095? (a) 0.264 (b) 0.3 (c) 0.38 (d) 0.095
  4. 4.Which is the greatest: 0.088, 0.8, 0.83, 0.767? (a) 0.088 (b) 0.8 (c) 0.83 (d) 0.767
  5. 5.Which is the smallest: 0.82, 0.042, 0.761, 0.8? (a) 0.82 (b) 0.042 (c) 0.761 (d) 0.8
  6. 6.Which is the greatest: 0.56, 0.488, 0.027, 0.5? (a) 0.56 (b) 0.488 (c) 0.027 (d) 0.5
  7. 7.Which is the greatest: 0.058, 0.55, 0.428, 0.5? (a) 0.058 (b) 0.55 (c) 0.428 (d) 0.5
  8. 8.Which is the greatest: 0.521, 0.6, 0.64, 0.084? (a) 0.521 (b) 0.6 (c) 0.64 (d) 0.084
  9. 9.7.13 + 9.1 = ? (a) 16.33 (b) 8.04 (c) 16.13 (d) 16.23
  10. 10.Which is the greatest: 0.069, 0.378, 0.4, 0.49? (a) 0.069 (b) 0.378 (c) 0.4 (d) 0.49
  11. 11.1.26 + 8.6 = ? (a) 2.12 (b) 9.76 (c) 9.96 (d) 9.86
  12. 12.2.26 + 9.9 = ? (a) 3.25 (b) 12.26 (c) 12.06 (d) 12.16
  13. 13.What is the value of the digit 8 in 28.496? (a) 80 (b) 8 (c) 0.8 (d) 0.08
  14. 14.What is the value of the digit 3 in 93.416? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  15. 15.3.51 + 6.6 = ? (a) 10.11 (b) 10.21 (c) 10.01 (d) 4.17
  16. 16.What is the value of the digit 8 in 84.567? (a) 0.8 (b) 80 (c) 0.08 (d) 8
  17. 17.What is the value of the digit 7 in 27.614? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  18. 18.Which is the smallest: 0.8, 0.762, 0.049, 0.83? (a) 0.8 (b) 0.762 (c) 0.049 (d) 0.83
  19. 19.Which is the smallest: 0.252, 0.054, 0.31, 0.3? (a) 0.252 (b) 0.054 (c) 0.31 (d) 0.3
  20. 20.Which is the smallest: 0.2, 0.192, 0.26, 0.034? (a) 0.2 (b) 0.192 (c) 0.26 (d) 0.034
  21. 21.1.11 + 8.9 = ? (a) 9.91 (b) 10.11 (c) 2 (d) 10.01
  22. 22.6.05 + 9.2 = ? (a) 6.97 (b) 15.15 (c) 15.35 (d) 15.25
  23. 23.4.91 + 3.7 = ? (a) 8.61 (b) 8.51 (c) 8.71 (d) 5.28
  24. 24.1.46 + 8.7 = ? (a) 10.26 (b) 10.16 (c) 10.06 (d) 2.33
  25. 25.Which is the greatest: 0.591, 0.64, 0.6, 0.013? (a) 0.591 (b) 0.64 (c) 0.6 (d) 0.013
  26. 26.1.61 + 8.8 = ? (a) 10.31 (b) 2.49 (c) 10.51 (d) 10.41
  27. 27.What is the value of the digit 3 in 85.239? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  28. 28.3.86 + 9.8 = ? (a) 13.56 (b) 13.66 (c) 4.84 (d) 13.76
  29. 29.Which is the smallest: 0.073, 0.449, 0.51, 0.5? (a) 0.073 (b) 0.449 (c) 0.51 (d) 0.5
  30. 30.1.95 + 1.7 = ? (a) 3.75 (b) 3.65 (c) 3.55 (d) 2.12
  31. 31.Which is the greatest: 0.5, 0.044, 0.52, 0.473? (a) 0.5 (b) 0.044 (c) 0.52 (d) 0.473
  32. 32.6.39 + 7.3 = ? (a) 13.79 (b) 13.59 (c) 7.12 (d) 13.69
  33. 33.What is the value of the digit 7 in 62.174? (a) 0.007 (b) 0.7 (c) 0.07 (d) 7
  34. 34.Which is the greatest: 0.188, 0.029, 0.2, 0.26? (a) 0.188 (b) 0.029 (c) 0.2 (d) 0.26
  35. 35.4.77 + 7.1 = ? (a) 11.97 (b) 11.77 (c) 5.48 (d) 11.87
  36. 36.What is the value of the digit 8 in 93.248? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  37. 37.Which is the smallest: 0.7, 0.078, 0.75, 0.645? (a) 0.7 (b) 0.078 (c) 0.75 (d) 0.645
  38. 38.What is the value of the digit 9 in 62.914? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  39. 39.1.74 + 1.1 = ? (a) 2.94 (b) 2.84 (c) 1.85 (d) 2.74
  40. 40.What is the value of the digit 4 in 45.217? (a) 0.4 (b) 40 (c) 4 (d) 0.04

Answer key

  1. 11.53
  2. 0.007
  3. 0.095
  4. 0.83
  5. 0.042
  6. 0.56
  7. 0.55
  8. 0.64
  9. 16.23
  10. 0.49
  11. 9.86
  12. 12.16
  13. 8
  14. 3
  15. 10.11
  16. 80
  17. 7
  18. 0.049
  19. 0.054
  20. 0.034
  21. 10.01
  22. 15.25
  23. 8.61
  24. 10.16
  25. 0.64
  26. 10.41
  27. 0.03
  28. 13.66
  29. 0.073
  30. 3.65
  31. 0.52
  32. 13.69
  33. 0.07
  34. 0.26
  35. 11.87
  36. 0.008
  37. 0.078
  38. 0.9
  39. 2.84
  40. 40

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