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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 392 · 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. 1.8.63 + 9.2 = ? (a) 9.55 (b) 17.73 (c) 17.93 (d) 17.83
  2. 2.1.71 + 2.5 = ? (a) 1.96 (b) 4.31 (c) 4.11 (d) 4.21
  3. 3.Which is the greatest: 0.6, 0.529, 0.097, 0.63? (a) 0.6 (b) 0.529 (c) 0.097 (d) 0.63
  4. 4.Which is the smallest: 0.124, 0.26, 0.096, 0.2? (a) 0.124 (b) 0.26 (c) 0.096 (d) 0.2
  5. 5.What is the value of the digit 3 in 17.324? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  6. 6.Which is the smallest: 0.072, 0.44, 0.381, 0.4? (a) 0.072 (b) 0.44 (c) 0.381 (d) 0.4
  7. 7.What is the value of the digit 6 in 41.786? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  8. 8.3.04 + 6.7 = ? (a) 9.74 (b) 9.64 (c) 3.71 (d) 9.84
  9. 9.What is the value of the digit 5 in 46.953? (a) 0.5 (b) 0.05 (c) 0.005 (d) 5
  10. 10.Which is the smallest: 0.064, 0.497, 0.59, 0.5? (a) 0.064 (b) 0.497 (c) 0.59 (d) 0.5
  11. 11.Which is the greatest: 0.2, 0.118, 0.21, 0.056? (a) 0.2 (b) 0.118 (c) 0.21 (d) 0.056
  12. 12.Which is the greatest: 0.3, 0.279, 0.39, 0.023? (a) 0.3 (b) 0.279 (c) 0.39 (d) 0.023
  13. 13.5.64 + 9.7 = ? (a) 15.44 (b) 15.34 (c) 15.24 (d) 6.61
  14. 14.What is the value of the digit 6 in 46.138? (a) 0.06 (b) 60 (c) 6 (d) 0.6
  15. 15.Which is the greatest: 0.648, 0.045, 0.78, 0.7? (a) 0.648 (b) 0.045 (c) 0.78 (d) 0.7
  16. 16.Which is the smallest: 0.012, 0.24, 0.2, 0.112? (a) 0.012 (b) 0.24 (c) 0.2 (d) 0.112
  17. 17.What is the value of the digit 2 in 62.781? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  18. 18.9.39 + 3.4 = ? (a) 12.69 (b) 12.89 (c) 12.79 (d) 9.73
  19. 19.Which is the greatest: 0.242, 0.3, 0.025, 0.38? (a) 0.242 (b) 0.3 (c) 0.025 (d) 0.38
  20. 20.What is the value of the digit 5 in 46.258? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  21. 21.8.14 + 4.4 = ? (a) 12.44 (b) 8.58 (c) 12.54 (d) 12.64
  22. 22.6.24 + 1.9 = ? (a) 8.04 (b) 8.14 (c) 8.24 (d) 6.43
  23. 23.7.68 + 5.9 = ? (a) 8.27 (b) 13.48 (c) 13.68 (d) 13.58
  24. 24.9.54 + 4.3 = ? (a) 13.74 (b) 9.97 (c) 13.94 (d) 13.84
  25. 25.9.52 + 3.4 = ? (a) 12.82 (b) 12.92 (c) 13.02 (d) 9.86
  26. 26.3.17 + 1.6 = ? (a) 4.77 (b) 4.87 (c) 4.67 (d) 3.33
  27. 27.Which is the greatest: 0.36, 0.089, 0.3, 0.261? (a) 0.36 (b) 0.089 (c) 0.3 (d) 0.261
  28. 28.8.21 + 4.5 = ? (a) 8.66 (b) 12.71 (c) 12.81 (d) 12.61
  29. 29.What is the value of the digit 3 in 62.713? (a) 0.003 (b) 3 (c) 0.3 (d) 0.03
  30. 30.8.57 + 1.3 = ? (a) 8.7 (b) 9.97 (c) 9.77 (d) 9.87
  31. 31.Which is the smallest: 0.648, 0.033, 0.77, 0.7? (a) 0.648 (b) 0.033 (c) 0.77 (d) 0.7
  32. 32.What is the value of the digit 7 in 12.674? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  33. 33.What is the value of the digit 3 in 93.841? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  34. 34.What is the value of the digit 5 in 54.973? (a) 0.5 (b) 0.05 (c) 50 (d) 5
  35. 35.Which is the greatest: 0.072, 0.115, 0.2, 0.25? (a) 0.072 (b) 0.115 (c) 0.2 (d) 0.25
  36. 36.Which is the smallest: 0.3, 0.36, 0.096, 0.296? (a) 0.3 (b) 0.36 (c) 0.096 (d) 0.296
  37. 37.3.21 + 7.1 = ? (a) 10.31 (b) 3.92 (c) 10.21 (d) 10.41
  38. 38.9.97 + 5.1 = ? (a) 14.97 (b) 15.17 (c) 10.48 (d) 15.07
  39. 39.3.06 + 5.8 = ? (a) 8.76 (b) 8.86 (c) 3.64 (d) 8.96
  40. 40.9.81 + 5.9 = ? (a) 15.61 (b) 15.71 (c) 10.4 (d) 15.81

Answer key

  1. 17.83
  2. 4.21
  3. 0.63
  4. 0.096
  5. 0.3
  6. 0.072
  7. 0.006
  8. 9.74
  9. 0.05
  10. 0.064
  11. 0.21
  12. 0.39
  13. 15.34
  14. 6
  15. 0.78
  16. 0.012
  17. 2
  18. 12.79
  19. 0.38
  20. 0.05
  21. 12.54
  22. 8.14
  23. 13.58
  24. 13.84
  25. 12.92
  26. 4.77
  27. 0.36
  28. 12.71
  29. 0.003
  30. 9.87
  31. 0.033
  32. 0.07
  33. 3
  34. 50
  35. 0.25
  36. 0.096
  37. 10.31
  38. 15.07
  39. 8.86
  40. 15.71

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