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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 34 · 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. 1.5.56 + 6.5 = ? (a) 12.06 (b) 12.16 (c) 11.96 (d) 6.21
  2. 2.2.42 + 5.5 = ? (a) 2.97 (b) 7.92 (c) 7.82 (d) 8.02
  3. 3.What is the value of the digit 2 in 92.358? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  4. 4.Which is the smallest: 0.023, 0.6, 0.69, 0.518? (a) 0.023 (b) 0.6 (c) 0.69 (d) 0.518
  5. 5.Which is the greatest: 0.333, 0.4, 0.42, 0.084? (a) 0.333 (b) 0.4 (c) 0.42 (d) 0.084
  6. 6.1.01 + 4.6 = ? (a) 5.71 (b) 5.61 (c) 1.47 (d) 5.51
  7. 7.What is the value of the digit 3 in 12.983? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  8. 8.Which is the greatest: 0.44, 0.4, 0.041, 0.365? (a) 0.44 (b) 0.4 (c) 0.041 (d) 0.365
  9. 9.7.78 + 6.6 = ? (a) 8.44 (b) 14.48 (c) 14.38 (d) 14.28
  10. 10.Which is the smallest: 0.82, 0.724, 0.045, 0.8? (a) 0.82 (b) 0.724 (c) 0.045 (d) 0.8
  11. 11.7.34 + 8.1 = ? (a) 15.54 (b) 8.15 (c) 15.44 (d) 15.34
  12. 12.4.97 + 5.5 = ? (a) 10.57 (b) 10.37 (c) 5.52 (d) 10.47
  13. 13.1.26 + 2.3 = ? (a) 3.46 (b) 3.56 (c) 3.66 (d) 1.49
  14. 14.Which is the greatest: 0.086, 0.21, 0.169, 0.2? (a) 0.086 (b) 0.21 (c) 0.169 (d) 0.2
  15. 15.1.33 + 3.4 = ? (a) 4.83 (b) 4.73 (c) 4.63 (d) 1.67
  16. 16.Which is the smallest: 0.2, 0.28, 0.143, 0.052? (a) 0.2 (b) 0.28 (c) 0.143 (d) 0.052
  17. 17.6.67 + 2.3 = ? (a) 8.87 (b) 9.07 (c) 6.9 (d) 8.97
  18. 18.7.82 + 3.4 = ? (a) 11.32 (b) 11.12 (c) 11.22 (d) 8.16
  19. 19.Which is the greatest: 0.019, 0.648, 0.7, 0.71? (a) 0.019 (b) 0.648 (c) 0.7 (d) 0.71
  20. 20.What is the value of the digit 6 in 71.269? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  21. 21.Which is the greatest: 0.86, 0.091, 0.747, 0.8? (a) 0.86 (b) 0.091 (c) 0.747 (d) 0.8
  22. 22.6.35 + 3.1 = ? (a) 9.55 (b) 9.45 (c) 9.35 (d) 6.66
  23. 23.What is the value of the digit 6 in 56.743? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  24. 24.6.63 + 1.8 = ? (a) 6.81 (b) 8.53 (c) 8.33 (d) 8.43
  25. 25.4.65 + 9.4 = ? (a) 5.59 (b) 14.05 (c) 13.95 (d) 14.15
  26. 26.Which is the smallest: 0.4, 0.058, 0.389, 0.41? (a) 0.4 (b) 0.058 (c) 0.389 (d) 0.41
  27. 27.What is the value of the digit 5 in 53.627? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  28. 28.What is the value of the digit 5 in 91.254? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  29. 29.Which is the greatest: 0.448, 0.013, 0.5, 0.56? (a) 0.448 (b) 0.013 (c) 0.5 (d) 0.56
  30. 30.What is the value of the digit 6 in 83.561? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  31. 31.Which is the greatest: 0.33, 0.3, 0.291, 0.051? (a) 0.33 (b) 0.3 (c) 0.291 (d) 0.051
  32. 32.What is the value of the digit 2 in 79.842? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  33. 33.4.45 + 3.9 = ? (a) 8.25 (b) 8.35 (c) 4.84 (d) 8.45
  34. 34.Which is the smallest: 0.085, 0.3, 0.31, 0.221? (a) 0.085 (b) 0.3 (c) 0.31 (d) 0.221
  35. 35.Which is the greatest: 0.28, 0.168, 0.092, 0.2? (a) 0.28 (b) 0.168 (c) 0.092 (d) 0.2
  36. 36.What is the value of the digit 1 in 14.723? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  37. 37.Which is the greatest: 0.168, 0.2, 0.24, 0.025? (a) 0.168 (b) 0.2 (c) 0.24 (d) 0.025
  38. 38.What is the value of the digit 2 in 24.158? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  39. 39.Which is the greatest: 0.35, 0.088, 0.3, 0.257? (a) 0.35 (b) 0.088 (c) 0.3 (d) 0.257
  40. 40.9.48 + 3.3 = ? (a) 12.68 (b) 12.88 (c) 12.78 (d) 9.81

Answer key

  1. 12.06
  2. 7.92
  3. 2
  4. 0.023
  5. 0.42
  6. 5.61
  7. 0.003
  8. 0.44
  9. 14.38
  10. 0.045
  11. 15.44
  12. 10.47
  13. 3.56
  14. 0.21
  15. 4.73
  16. 0.052
  17. 8.97
  18. 11.22
  19. 0.71
  20. 0.06
  21. 0.86
  22. 9.45
  23. 6
  24. 8.43
  25. 14.05
  26. 0.058
  27. 50
  28. 0.05
  29. 0.56
  30. 0.06
  31. 0.33
  32. 0.002
  33. 8.35
  34. 0.085
  35. 0.28
  36. 10
  37. 0.24
  38. 20
  39. 0.35
  40. 12.78

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