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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 894 · 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. 1.9.81 + 7.1 = ? (a) 10.52 (b) 16.81 (c) 17.01 (d) 16.91
  2. 2.What is the value of the digit 5 in 13.659? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  3. 3.1.81 + 8.1 = ? (a) 10.01 (b) 2.62 (c) 9.81 (d) 9.91
  4. 4.3.96 + 9.4 = ? (a) 4.9 (b) 13.46 (c) 13.26 (d) 13.36
  5. 5.7.31 + 3.7 = ? (a) 11.11 (b) 10.91 (c) 11.01 (d) 7.68
  6. 6.Which is the greatest: 0.055, 0.679, 0.7, 0.76? (a) 0.055 (b) 0.679 (c) 0.7 (d) 0.76
  7. 7.What is the value of the digit 3 in 72.938? (a) 0.03 (b) 0.003 (c) 0.3 (d) 3
  8. 8.What is the value of the digit 3 in 87.934? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  9. 9.1.88 + 7.8 = ? (a) 2.66 (b) 9.58 (c) 9.78 (d) 9.68
  10. 10.Which is the greatest: 0.4, 0.363, 0.064, 0.42? (a) 0.4 (b) 0.363 (c) 0.064 (d) 0.42
  11. 11.7.47 + 6.7 = ? (a) 14.27 (b) 14.17 (c) 14.07 (d) 8.14
  12. 12.Which is the greatest: 0.382, 0.43, 0.049, 0.4? (a) 0.382 (b) 0.43 (c) 0.049 (d) 0.4
  13. 13.8.61 + 4.7 = ? (a) 9.08 (b) 13.31 (c) 13.41 (d) 13.21
  14. 14.Which is the smallest: 0.782, 0.83, 0.8, 0.022? (a) 0.782 (b) 0.83 (c) 0.8 (d) 0.022
  15. 15.2.33 + 4.5 = ? (a) 6.83 (b) 6.73 (c) 6.93 (d) 2.78
  16. 16.What is the value of the digit 8 in 61.589? (a) 8 (b) 0.08 (c) 0.008 (d) 0.8
  17. 17.6.17 + 1.9 = ? (a) 8.17 (b) 6.36 (c) 7.97 (d) 8.07
  18. 18.2.93 + 8.3 = ? (a) 11.13 (b) 11.33 (c) 11.23 (d) 3.76
  19. 19.What is the value of the digit 3 in 47.325? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  20. 20.Which is the greatest: 0.053, 0.5, 0.52, 0.462? (a) 0.053 (b) 0.5 (c) 0.52 (d) 0.462
  21. 21.7.26 + 2.1 = ? (a) 9.46 (b) 9.26 (c) 7.47 (d) 9.36
  22. 22.4.54 + 3.1 = ? (a) 7.54 (b) 4.85 (c) 7.74 (d) 7.64
  23. 23.1.21 + 7.1 = ? (a) 8.21 (b) 8.31 (c) 1.92 (d) 8.41
  24. 24.What is the value of the digit 4 in 51.423? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  25. 25.What is the value of the digit 9 in 69.315? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  26. 26.What is the value of the digit 3 in 32.647? (a) 0.03 (b) 0.3 (c) 30 (d) 3
  27. 27.Which is the greatest: 0.8, 0.744, 0.86, 0.011? (a) 0.8 (b) 0.744 (c) 0.86 (d) 0.011
  28. 28.5.41 + 3.5 = ? (a) 8.81 (b) 9.01 (c) 8.91 (d) 5.76
  29. 29.4.03 + 7.7 = ? (a) 11.63 (b) 11.83 (c) 11.73 (d) 4.8
  30. 30.2.91 + 3.3 = ? (a) 6.11 (b) 6.21 (c) 6.31 (d) 3.24
  31. 31.1.37 + 1.7 = ? (a) 2.97 (b) 3.17 (c) 3.07 (d) 1.54
  32. 32.Which is the greatest: 0.072, 0.133, 0.2, 0.21? (a) 0.072 (b) 0.133 (c) 0.2 (d) 0.21
  33. 33.2.78 + 7.3 = ? (a) 9.98 (b) 10.18 (c) 10.08 (d) 3.51
  34. 34.What is the value of the digit 8 in 58.937? (a) 8 (b) 80 (c) 0.8 (d) 0.08
  35. 35.Which is the greatest: 0.494, 0.5, 0.56, 0.035? (a) 0.494 (b) 0.5 (c) 0.56 (d) 0.035
  36. 36.3.53 + 2.6 = ? (a) 6.23 (b) 6.03 (c) 3.79 (d) 6.13
  37. 37.7.31 + 8.6 = ? (a) 15.81 (b) 16.01 (c) 15.91 (d) 8.17
  38. 38.What is the value of the digit 9 in 15.896? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  39. 39.8.54 + 9.5 = ? (a) 18.04 (b) 18.14 (c) 17.94 (d) 9.49
  40. 40.6.73 + 9.6 = ? (a) 7.69 (b) 16.43 (c) 16.23 (d) 16.33

Answer key

  1. 16.91
  2. 0.05
  3. 9.91
  4. 13.36
  5. 11.01
  6. 0.76
  7. 0.03
  8. 0.03
  9. 9.68
  10. 0.42
  11. 14.17
  12. 0.43
  13. 13.31
  14. 0.022
  15. 6.83
  16. 0.08
  17. 8.07
  18. 11.23
  19. 0.3
  20. 0.52
  21. 9.36
  22. 7.64
  23. 8.31
  24. 0.4
  25. 9
  26. 30
  27. 0.86
  28. 8.91
  29. 11.73
  30. 6.21
  31. 3.07
  32. 0.21
  33. 10.08
  34. 8
  35. 0.56
  36. 6.13
  37. 15.91
  38. 0.09
  39. 18.04
  40. 16.33

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