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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 193 · 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.What is the value of the digit 3 in 34.127? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  2. 2.4.79 + 1.8 = ? (a) 6.69 (b) 4.97 (c) 6.49 (d) 6.59
  3. 3.4.44 + 3.6 = ? (a) 8.14 (b) 7.94 (c) 8.04 (d) 4.8
  4. 4.Which is the smallest: 0.047, 0.24, 0.113, 0.2? (a) 0.047 (b) 0.24 (c) 0.113 (d) 0.2
  5. 5.Which is the smallest: 0.067, 0.37, 0.222, 0.3? (a) 0.067 (b) 0.37 (c) 0.222 (d) 0.3
  6. 6.3.78 + 7.2 = ? (a) 10.88 (b) 11.08 (c) 4.5 (d) 10.98
  7. 7.5.75 + 9.2 = ? (a) 14.95 (b) 6.67 (c) 15.05 (d) 14.85
  8. 8.7.35 + 2.3 = ? (a) 9.75 (b) 9.65 (c) 7.58 (d) 9.55
  9. 9.Which is the smallest: 0.616, 0.74, 0.059, 0.7? (a) 0.616 (b) 0.74 (c) 0.059 (d) 0.7
  10. 10.Which is the greatest: 0.698, 0.7, 0.089, 0.78? (a) 0.698 (b) 0.7 (c) 0.089 (d) 0.78
  11. 11.What is the value of the digit 5 in 58.921? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  12. 12.What is the value of the digit 9 in 87.294? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  13. 13.1.77 + 3.4 = ? (a) 2.11 (b) 5.07 (c) 5.17 (d) 5.27
  14. 14.Which is the smallest: 0.8, 0.86, 0.721, 0.096? (a) 0.8 (b) 0.86 (c) 0.721 (d) 0.096
  15. 15.8.72 + 8.5 = ? (a) 17.22 (b) 9.57 (c) 17.32 (d) 17.12
  16. 16.What is the value of the digit 5 in 36.185? (a) 0.005 (b) 0.5 (c) 5 (d) 0.05
  17. 17.What is the value of the digit 2 in 75.248? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  18. 18.What is the value of the digit 7 in 37.924? (a) 0.7 (b) 7 (c) 0.07 (d) 70
  19. 19.Which is the greatest: 0.342, 0.44, 0.033, 0.4? (a) 0.342 (b) 0.44 (c) 0.033 (d) 0.4
  20. 20.What is the value of the digit 8 in 25.198? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  21. 21.What is the value of the digit 7 in 79.516? (a) 7 (b) 70 (c) 0.07 (d) 0.7
  22. 22.2.87 + 3.1 = ? (a) 6.07 (b) 3.18 (c) 5.87 (d) 5.97
  23. 23.2.63 + 3.9 = ? (a) 6.63 (b) 6.53 (c) 3.02 (d) 6.43
  24. 24.Which is the greatest: 0.87, 0.052, 0.8, 0.743? (a) 0.87 (b) 0.052 (c) 0.8 (d) 0.743
  25. 25.8.33 + 2.7 = ? (a) 11.03 (b) 8.6 (c) 10.93 (d) 11.13
  26. 26.Which is the greatest: 0.084, 0.787, 0.8, 0.89? (a) 0.084 (b) 0.787 (c) 0.8 (d) 0.89
  27. 27.Which is the smallest: 0.7, 0.76, 0.695, 0.025? (a) 0.7 (b) 0.76 (c) 0.695 (d) 0.025
  28. 28.4.65 + 9.1 = ? (a) 13.75 (b) 13.85 (c) 5.56 (d) 13.65
  29. 29.2.59 + 8.9 = ? (a) 11.39 (b) 11.49 (c) 11.59 (d) 3.48
  30. 30.Which is the smallest: 0.021, 0.472, 0.5, 0.52? (a) 0.021 (b) 0.472 (c) 0.5 (d) 0.52
  31. 31.What is the value of the digit 1 in 58.136? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  32. 32.What is the value of the digit 6 in 67.541? (a) 0.06 (b) 6 (c) 0.6 (d) 60
  33. 33.4.02 + 9.5 = ? (a) 13.62 (b) 13.42 (c) 13.52 (d) 4.97
  34. 34.9.98 + 8.1 = ? (a) 10.79 (b) 17.98 (c) 18.18 (d) 18.08
  35. 35.What is the value of the digit 9 in 13.796? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  36. 36.What is the value of the digit 6 in 58.296? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  37. 37.Which is the smallest: 0.31, 0.066, 0.222, 0.3? (a) 0.31 (b) 0.066 (c) 0.222 (d) 0.3
  38. 38.Which is the smallest: 0.21, 0.029, 0.2, 0.178? (a) 0.21 (b) 0.029 (c) 0.2 (d) 0.178
  39. 39.What is the value of the digit 7 in 27.315? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  40. 40.8.77 + 5.3 = ? (a) 14.07 (b) 9.3 (c) 13.97 (d) 14.17

Answer key

  1. 30
  2. 6.59
  3. 8.04
  4. 0.047
  5. 0.067
  6. 10.98
  7. 14.95
  8. 9.65
  9. 0.059
  10. 0.78
  11. 50
  12. 0.09
  13. 5.17
  14. 0.096
  15. 17.22
  16. 0.005
  17. 0.2
  18. 7
  19. 0.44
  20. 0.008
  21. 70
  22. 5.97
  23. 6.53
  24. 0.87
  25. 11.03
  26. 0.89
  27. 0.025
  28. 13.75
  29. 11.49
  30. 0.021
  31. 0.1
  32. 60
  33. 13.52
  34. 18.08
  35. 0.09
  36. 0.006
  37. 0.066
  38. 0.029
  39. 7
  40. 14.07

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