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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 200 · 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. 1.4.98 + 5.6 = ? (a) 10.68 (b) 10.58 (c) 5.54 (d) 10.48
  2. 2.6.51 + 8.1 = ? (a) 14.61 (b) 14.51 (c) 7.32 (d) 14.71
  3. 3.What is the value of the digit 1 in 37.415? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  4. 4.8.06 + 8.7 = ? (a) 16.86 (b) 8.93 (c) 16.66 (d) 16.76
  5. 5.What is the value of the digit 2 in 21.468? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  6. 6.What is the value of the digit 4 in 12.483? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  7. 7.What is the value of the digit 8 in 35.748? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  8. 8.7.86 + 1.1 = ? (a) 8.96 (b) 8.86 (c) 7.97 (d) 9.06
  9. 9.7.61 + 3.1 = ? (a) 10.81 (b) 10.71 (c) 10.61 (d) 7.92
  10. 10.1.67 + 2.5 = ? (a) 1.92 (b) 4.07 (c) 4.27 (d) 4.17
  11. 11.What is the value of the digit 1 in 91.538? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  12. 12.Which is the greatest: 0.021, 0.69, 0.524, 0.6? (a) 0.021 (b) 0.69 (c) 0.524 (d) 0.6
  13. 13.9.11 + 8.2 = ? (a) 17.21 (b) 17.31 (c) 9.93 (d) 17.41
  14. 14.What is the value of the digit 3 in 21.437? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  15. 15.Which is the smallest: 0.041, 0.22, 0.167, 0.2? (a) 0.041 (b) 0.22 (c) 0.167 (d) 0.2
  16. 16.Which is the smallest: 0.064, 0.658, 0.7, 0.75? (a) 0.064 (b) 0.658 (c) 0.7 (d) 0.75
  17. 17.2.57 + 2.1 = ? (a) 4.67 (b) 4.77 (c) 2.78 (d) 4.57
  18. 18.Which is the smallest: 0.57, 0.5, 0.048, 0.424? (a) 0.57 (b) 0.5 (c) 0.048 (d) 0.424
  19. 19.Which is the smallest: 0.041, 0.3, 0.38, 0.283? (a) 0.041 (b) 0.3 (c) 0.38 (d) 0.283
  20. 20.6.04 + 5.1 = ? (a) 6.55 (b) 11.24 (c) 11.14 (d) 11.04
  21. 21.What is the value of the digit 7 in 75.948? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  22. 22.Which is the greatest: 0.4, 0.313, 0.098, 0.46? (a) 0.4 (b) 0.313 (c) 0.098 (d) 0.46
  23. 23.8.35 + 3.5 = ? (a) 8.7 (b) 11.75 (c) 11.85 (d) 11.95
  24. 24.2.83 + 8.9 = ? (a) 11.83 (b) 11.73 (c) 3.72 (d) 11.63
  25. 25.Which is the smallest: 0.68, 0.041, 0.6, 0.521? (a) 0.68 (b) 0.041 (c) 0.6 (d) 0.521
  26. 26.What is the value of the digit 1 in 91.527? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  27. 27.What is the value of the digit 1 in 92.167? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  28. 28.What is the value of the digit 4 in 43.812? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  29. 29.What is the value of the digit 1 in 14.782? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  30. 30.What is the value of the digit 8 in 81.926? (a) 0.8 (b) 8 (c) 80 (d) 0.08
  31. 31.What is the value of the digit 3 in 94.253? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  32. 32.4.37 + 7.8 = ? (a) 12.17 (b) 12.07 (c) 12.27 (d) 5.15
  33. 33.What is the value of the digit 9 in 61.297? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9
  34. 34.What is the value of the digit 7 in 85.127? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  35. 35.8.06 + 8.4 = ? (a) 16.46 (b) 16.36 (c) 16.56 (d) 8.9
  36. 36.9.54 + 8.1 = ? (a) 17.74 (b) 10.35 (c) 17.54 (d) 17.64
  37. 37.Which is the greatest: 0.739, 0.044, 0.85, 0.8? (a) 0.739 (b) 0.044 (c) 0.85 (d) 0.8
  38. 38.What is the value of the digit 2 in 43.192? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  39. 39.2.22 + 9.3 = ? (a) 11.42 (b) 3.15 (c) 11.62 (d) 11.52
  40. 40.Which is the smallest: 0.018, 0.53, 0.5, 0.421? (a) 0.018 (b) 0.53 (c) 0.5 (d) 0.421

Answer key

  1. 10.58
  2. 14.61
  3. 0.01
  4. 16.76
  5. 20
  6. 0.4
  7. 0.008
  8. 8.96
  9. 10.71
  10. 4.17
  11. 1
  12. 0.69
  13. 17.31
  14. 0.03
  15. 0.041
  16. 0.064
  17. 4.67
  18. 0.048
  19. 0.041
  20. 11.14
  21. 70
  22. 0.46
  23. 11.85
  24. 11.73
  25. 0.041
  26. 1
  27. 0.1
  28. 40
  29. 10
  30. 80
  31. 0.003
  32. 12.17
  33. 0.09
  34. 0.007
  35. 16.46
  36. 17.64
  37. 0.85
  38. 0.002
  39. 11.52
  40. 0.018

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