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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 212 · 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. 1.1.85 + 4.6 = ? (a) 2.31 (b) 6.55 (c) 6.35 (d) 6.45
  2. 2.2.97 + 1.3 = ? (a) 3.1 (b) 4.37 (c) 4.27 (d) 4.17
  3. 3.Which is the smallest: 0.672, 0.7, 0.013, 0.78? (a) 0.672 (b) 0.7 (c) 0.013 (d) 0.78
  4. 4.5.47 + 1.7 = ? (a) 7.07 (b) 5.64 (c) 7.17 (d) 7.27
  5. 5.Which is the greatest: 0.28, 0.073, 0.179, 0.2? (a) 0.28 (b) 0.073 (c) 0.179 (d) 0.2
  6. 6.What is the value of the digit 4 in 71.264? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  7. 7.9.75 + 9.1 = ? (a) 18.95 (b) 18.85 (c) 10.66 (d) 18.75
  8. 8.What is the value of the digit 5 in 53.286? (a) 50 (b) 0.05 (c) 5 (d) 0.5
  9. 9.Which is the greatest: 0.792, 0.88, 0.8, 0.036? (a) 0.792 (b) 0.88 (c) 0.8 (d) 0.036
  10. 10.What is the value of the digit 9 in 19.472? (a) 9 (b) 0.09 (c) 0.9 (d) 90
  11. 11.What is the value of the digit 4 in 12.748? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  12. 12.What is the value of the digit 2 in 64.921? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  13. 13.8.82 + 7.1 = ? (a) 15.82 (b) 9.53 (c) 16.02 (d) 15.92
  14. 14.What is the value of the digit 7 in 87.694? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  15. 15.7.33 + 9.6 = ? (a) 17.03 (b) 8.29 (c) 16.93 (d) 16.83
  16. 16.1.13 + 2.9 = ? (a) 4.03 (b) 4.13 (c) 3.93 (d) 1.42
  17. 17.What is the value of the digit 5 in 59.716? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  18. 18.Which is the greatest: 0.8, 0.785, 0.87, 0.033? (a) 0.8 (b) 0.785 (c) 0.87 (d) 0.033
  19. 19.What is the value of the digit 6 in 71.648? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  20. 20.Which is the smallest: 0.448, 0.5, 0.034, 0.52? (a) 0.448 (b) 0.5 (c) 0.034 (d) 0.52
  21. 21.What is the value of the digit 4 in 63.248? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  22. 22.Which is the greatest: 0.042, 0.24, 0.173, 0.2? (a) 0.042 (b) 0.24 (c) 0.173 (d) 0.2
  23. 23.2.87 + 4.6 = ? (a) 7.37 (b) 7.57 (c) 3.33 (d) 7.47
  24. 24.2.86 + 4.7 = ? (a) 7.66 (b) 7.56 (c) 7.46 (d) 3.33
  25. 25.Which is the greatest: 0.58, 0.5, 0.421, 0.081? (a) 0.58 (b) 0.5 (c) 0.421 (d) 0.081
  26. 26.1.81 + 4.5 = ? (a) 2.26 (b) 6.21 (c) 6.31 (d) 6.41
  27. 27.1.91 + 5.8 = ? (a) 7.61 (b) 2.49 (c) 7.71 (d) 7.81
  28. 28.9.07 + 9.1 = ? (a) 18.07 (b) 18.27 (c) 9.98 (d) 18.17
  29. 29.What is the value of the digit 8 in 81.672? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  30. 30.8.73 + 4.9 = ? (a) 13.73 (b) 9.22 (c) 13.53 (d) 13.63
  31. 31.Which is the smallest: 0.337, 0.4, 0.42, 0.034? (a) 0.337 (b) 0.4 (c) 0.42 (d) 0.034
  32. 32.What is the value of the digit 3 in 37.941? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  33. 33.Which is the smallest: 0.41, 0.041, 0.4, 0.388? (a) 0.41 (b) 0.041 (c) 0.4 (d) 0.388
  34. 34.2.85 + 3.2 = ? (a) 3.17 (b) 6.05 (c) 5.95 (d) 6.15
  35. 35.6.68 + 6.2 = ? (a) 12.98 (b) 12.88 (c) 12.78 (d) 7.3
  36. 36.Which is the greatest: 0.45, 0.4, 0.364, 0.082? (a) 0.45 (b) 0.4 (c) 0.364 (d) 0.082
  37. 37.What is the value of the digit 5 in 58.172? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  38. 38.What is the value of the digit 2 in 95.123? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  39. 39.1.45 + 3.2 = ? (a) 4.75 (b) 4.55 (c) 4.65 (d) 1.77
  40. 40.4.91 + 1.9 = ? (a) 6.91 (b) 5.1 (c) 6.71 (d) 6.81

Answer key

  1. 6.45
  2. 4.27
  3. 0.013
  4. 7.17
  5. 0.28
  6. 0.004
  7. 18.85
  8. 50
  9. 0.88
  10. 9
  11. 0.04
  12. 0.02
  13. 15.92
  14. 7
  15. 16.93
  16. 4.03
  17. 50
  18. 0.87
  19. 0.6
  20. 0.034
  21. 0.04
  22. 0.24
  23. 7.47
  24. 7.56
  25. 0.58
  26. 6.31
  27. 7.71
  28. 18.17
  29. 80
  30. 13.63
  31. 0.034
  32. 30
  33. 0.041
  34. 6.05
  35. 12.88
  36. 0.45
  37. 50
  38. 0.02
  39. 4.65
  40. 6.81

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