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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 950 · 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. 1.4.68 + 5.9 = ? (a) 10.48 (b) 5.27 (c) 10.68 (d) 10.58
  2. 2.Which is the greatest: 0.86, 0.8, 0.745, 0.011? (a) 0.86 (b) 0.8 (c) 0.745 (d) 0.011
  3. 3.1.04 + 3.1 = ? (a) 4.04 (b) 4.14 (c) 1.35 (d) 4.24
  4. 4.1.81 + 2.1 = ? (a) 3.91 (b) 3.81 (c) 2.02 (d) 4.01
  5. 5.6.23 + 6.3 = ? (a) 6.86 (b) 12.63 (c) 12.53 (d) 12.43
  6. 6.What is the value of the digit 4 in 48.325? (a) 0.04 (b) 40 (c) 0.4 (d) 4
  7. 7.What is the value of the digit 5 in 29.653? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  8. 8.Which is the smallest: 0.024, 0.37, 0.3, 0.264? (a) 0.024 (b) 0.37 (c) 0.3 (d) 0.264
  9. 9.What is the value of the digit 4 in 91.743? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  10. 10.7.91 + 6.7 = ? (a) 8.58 (b) 14.71 (c) 14.51 (d) 14.61
  11. 11.Which is the smallest: 0.066, 0.272, 0.37, 0.3? (a) 0.066 (b) 0.272 (c) 0.37 (d) 0.3
  12. 12.What is the value of the digit 8 in 98.562? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  13. 13.What is the value of the digit 3 in 53.127? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  14. 14.8.59 + 1.4 = ? (a) 8.73 (b) 10.09 (c) 9.89 (d) 9.99
  15. 15.Which is the smallest: 0.69, 0.589, 0.6, 0.085? (a) 0.69 (b) 0.589 (c) 0.6 (d) 0.085
  16. 16.Which is the greatest: 0.095, 0.89, 0.777, 0.8? (a) 0.095 (b) 0.89 (c) 0.777 (d) 0.8
  17. 17.8.12 + 5.1 = ? (a) 13.22 (b) 8.63 (c) 13.32 (d) 13.12
  18. 18.Which is the smallest: 0.8, 0.042, 0.792, 0.86? (a) 0.8 (b) 0.042 (c) 0.792 (d) 0.86
  19. 19.Which is the greatest: 0.446, 0.55, 0.5, 0.032? (a) 0.446 (b) 0.55 (c) 0.5 (d) 0.032
  20. 20.What is the value of the digit 4 in 94.637? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  21. 21.What is the value of the digit 3 in 18.235? (a) 0.03 (b) 0.003 (c) 0.3 (d) 3
  22. 22.3.46 + 2.1 = ? (a) 3.67 (b) 5.66 (c) 5.56 (d) 5.46
  23. 23.Which is the smallest: 0.046, 0.6, 0.585, 0.64? (a) 0.046 (b) 0.6 (c) 0.585 (d) 0.64
  24. 24.What is the value of the digit 2 in 24.816? (a) 2 (b) 20 (c) 0.2 (d) 0.02
  25. 25.Which is the greatest: 0.085, 0.63, 0.6, 0.557? (a) 0.085 (b) 0.63 (c) 0.6 (d) 0.557
  26. 26.What is the value of the digit 1 in 15.387? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  27. 27.3.11 + 7.4 = ? (a) 10.61 (b) 10.41 (c) 10.51 (d) 3.85
  28. 28.What is the value of the digit 9 in 95.813? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  29. 29.9.35 + 9.1 = ? (a) 18.35 (b) 10.26 (c) 18.45 (d) 18.55
  30. 30.Which is the smallest: 0.086, 0.2, 0.22, 0.134? (a) 0.086 (b) 0.2 (c) 0.22 (d) 0.134
  31. 31.3.03 + 5.2 = ? (a) 8.33 (b) 3.55 (c) 8.13 (d) 8.23
  32. 32.Which is the smallest: 0.5, 0.073, 0.445, 0.59? (a) 0.5 (b) 0.073 (c) 0.445 (d) 0.59
  33. 33.Which is the smallest: 0.029, 0.83, 0.8, 0.733? (a) 0.029 (b) 0.83 (c) 0.8 (d) 0.733
  34. 34.4.12 + 9.2 = ? (a) 5.04 (b) 13.42 (c) 13.32 (d) 13.22
  35. 35.What is the value of the digit 2 in 17.298? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  36. 36.Which is the smallest: 0.69, 0.581, 0.039, 0.6? (a) 0.69 (b) 0.581 (c) 0.039 (d) 0.6
  37. 37.3.84 + 6.2 = ? (a) 10.14 (b) 4.46 (c) 9.94 (d) 10.04
  38. 38.Which is the greatest: 0.66, 0.6, 0.029, 0.593? (a) 0.66 (b) 0.6 (c) 0.029 (d) 0.593
  39. 39.1.79 + 7.5 = ? (a) 9.29 (b) 9.39 (c) 9.19 (d) 2.54
  40. 40.1.31 + 2.2 = ? (a) 1.53 (b) 3.51 (c) 3.41 (d) 3.61

Answer key

  1. 10.58
  2. 0.86
  3. 4.14
  4. 3.91
  5. 12.53
  6. 40
  7. 0.05
  8. 0.024
  9. 0.04
  10. 14.61
  11. 0.066
  12. 8
  13. 3
  14. 9.99
  15. 0.085
  16. 0.89
  17. 13.22
  18. 0.042
  19. 0.55
  20. 4
  21. 0.03
  22. 5.56
  23. 0.046
  24. 20
  25. 0.63
  26. 10
  27. 10.51
  28. 90
  29. 18.45
  30. 0.086
  31. 8.23
  32. 0.073
  33. 0.029
  34. 13.32
  35. 0.2
  36. 0.039
  37. 10.04
  38. 0.66
  39. 9.29
  40. 3.51

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