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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 664 · 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. 1.2.48 + 3.9 = ? (a) 6.48 (b) 6.38 (c) 6.28 (d) 2.87
  2. 2.Which is the smallest: 0.336, 0.064, 0.4, 0.42? (a) 0.336 (b) 0.064 (c) 0.4 (d) 0.42
  3. 3.3.35 + 2.1 = ? (a) 5.35 (b) 3.56 (c) 5.45 (d) 5.55
  4. 4.2.27 + 8.1 = ? (a) 10.27 (b) 10.47 (c) 3.08 (d) 10.37
  5. 5.What is the value of the digit 4 in 17.243? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  6. 6.What is the value of the digit 8 in 91.238? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  7. 7.What is the value of the digit 8 in 89.523? (a) 8 (b) 0.8 (c) 80 (d) 0.08
  8. 8.Which is the smallest: 0.34, 0.3, 0.253, 0.055? (a) 0.34 (b) 0.3 (c) 0.253 (d) 0.055
  9. 9.What is the value of the digit 8 in 95.783? (a) 0.008 (b) 0.8 (c) 8 (d) 0.08
  10. 10.9.92 + 6.5 = ? (a) 16.52 (b) 10.57 (c) 16.32 (d) 16.42
  11. 11.What is the value of the digit 8 in 85.913? (a) 80 (b) 0.8 (c) 0.08 (d) 8
  12. 12.What is the value of the digit 8 in 58.214? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  13. 13.Which is the greatest: 0.025, 0.7, 0.627, 0.76? (a) 0.025 (b) 0.7 (c) 0.627 (d) 0.76
  14. 14.Which is the greatest: 0.011, 0.6, 0.65, 0.582? (a) 0.011 (b) 0.6 (c) 0.65 (d) 0.582
  15. 15.What is the value of the digit 9 in 18.539? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  16. 16.2.15 + 7.4 = ? (a) 2.89 (b) 9.45 (c) 9.65 (d) 9.55
  17. 17.1.82 + 2.5 = ? (a) 4.32 (b) 4.42 (c) 4.22 (d) 2.07
  18. 18.3.88 + 4.1 = ? (a) 8.08 (b) 4.29 (c) 7.88 (d) 7.98
  19. 19.6.57 + 5.1 = ? (a) 11.67 (b) 11.57 (c) 7.08 (d) 11.77
  20. 20.3.52 + 8.1 = ? (a) 4.33 (b) 11.62 (c) 11.52 (d) 11.72
  21. 21.9.33 + 3.4 = ? (a) 9.67 (b) 12.63 (c) 12.73 (d) 12.83
  22. 22.7.58 + 7.3 = ? (a) 14.98 (b) 14.78 (c) 14.88 (d) 8.31
  23. 23.6.41 + 3.2 = ? (a) 9.51 (b) 9.61 (c) 6.73 (d) 9.71
  24. 24.2.88 + 4.1 = ? (a) 7.08 (b) 6.88 (c) 6.98 (d) 3.29
  25. 25.What is the value of the digit 5 in 95.827? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  26. 26.8.11 + 7.8 = ? (a) 15.91 (b) 16.01 (c) 8.89 (d) 15.81
  27. 27.What is the value of the digit 2 in 21.674? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  28. 28.3.04 + 7.9 = ? (a) 11.04 (b) 10.84 (c) 3.83 (d) 10.94
  29. 29.What is the value of the digit 9 in 97.326? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  30. 30.9.27 + 3.1 = ? (a) 12.47 (b) 12.27 (c) 9.58 (d) 12.37
  31. 31.Which is the smallest: 0.095, 0.88, 0.8, 0.717? (a) 0.095 (b) 0.88 (c) 0.8 (d) 0.717
  32. 32.7.53 + 8.2 = ? (a) 15.63 (b) 8.35 (c) 15.83 (d) 15.73
  33. 33.2.34 + 9.5 = ? (a) 11.74 (b) 11.84 (c) 11.94 (d) 3.29
  34. 34.What is the value of the digit 1 in 31.876? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  35. 35.Which is the smallest: 0.278, 0.3, 0.029, 0.32? (a) 0.278 (b) 0.3 (c) 0.029 (d) 0.32
  36. 36.Which is the smallest: 0.2, 0.137, 0.22, 0.096? (a) 0.2 (b) 0.137 (c) 0.22 (d) 0.096
  37. 37.1.38 + 4.5 = ? (a) 5.88 (b) 5.98 (c) 1.83 (d) 5.78
  38. 38.9.11 + 2.2 = ? (a) 9.33 (b) 11.41 (c) 11.21 (d) 11.31
  39. 39.What is the value of the digit 9 in 52.419? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  40. 40.What is the value of the digit 2 in 38.625? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002

Answer key

  1. 6.38
  2. 0.064
  3. 5.45
  4. 10.37
  5. 0.04
  6. 0.008
  7. 80
  8. 0.055
  9. 0.08
  10. 16.42
  11. 80
  12. 8
  13. 0.76
  14. 0.65
  15. 0.009
  16. 9.55
  17. 4.32
  18. 7.98
  19. 11.67
  20. 11.62
  21. 12.73
  22. 14.88
  23. 9.61
  24. 6.98
  25. 5
  26. 15.91
  27. 20
  28. 10.94
  29. 90
  30. 12.37
  31. 0.095
  32. 15.73
  33. 11.84
  34. 1
  35. 0.029
  36. 0.096
  37. 5.88
  38. 11.31
  39. 0.009
  40. 0.02

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