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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 998 · 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. 1.4.31 + 5.8 = ? (a) 10.11 (b) 10.21 (c) 10.01 (d) 4.89
  2. 2.What is the value of the digit 6 in 76.893? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  3. 3.2.41 + 2.8 = ? (a) 5.31 (b) 5.11 (c) 2.69 (d) 5.21
  4. 4.What is the value of the digit 9 in 81.396? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  5. 5.Which is the greatest: 0.3, 0.37, 0.257, 0.096? (a) 0.3 (b) 0.37 (c) 0.257 (d) 0.096
  6. 6.5.53 + 7.4 = ? (a) 6.27 (b) 13.03 (c) 12.83 (d) 12.93
  7. 7.2.74 + 3.3 = ? (a) 3.07 (b) 5.94 (c) 6.14 (d) 6.04
  8. 8.7.09 + 1.6 = ? (a) 7.25 (b) 8.79 (c) 8.69 (d) 8.59
  9. 9.Which is the greatest: 0.24, 0.056, 0.176, 0.2? (a) 0.24 (b) 0.056 (c) 0.176 (d) 0.2
  10. 10.What is the value of the digit 2 in 41.823? (a) 0.002 (b) 2 (c) 0.02 (d) 0.2
  11. 11.4.39 + 4.6 = ? (a) 8.89 (b) 4.85 (c) 9.09 (d) 8.99
  12. 12.What is the value of the digit 7 in 84.795? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  13. 13.Which is the smallest: 0.86, 0.086, 0.794, 0.8? (a) 0.86 (b) 0.086 (c) 0.794 (d) 0.8
  14. 14.3.33 + 8.6 = ? (a) 4.19 (b) 12.03 (c) 11.83 (d) 11.93
  15. 15.8.29 + 3.4 = ? (a) 11.59 (b) 8.63 (c) 11.69 (d) 11.79
  16. 16.2.28 + 8.8 = ? (a) 11.18 (b) 11.08 (c) 10.98 (d) 3.16
  17. 17.Which is the greatest: 0.2, 0.28, 0.069, 0.127? (a) 0.2 (b) 0.28 (c) 0.069 (d) 0.127
  18. 18.What is the value of the digit 1 in 74.162? (a) 1 (b) 0.001 (c) 0.1 (d) 0.01
  19. 19.7.54 + 7.9 = ? (a) 15.34 (b) 8.33 (c) 15.44 (d) 15.54
  20. 20.What is the value of the digit 1 in 91.258? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  21. 21.9.19 + 7.1 = ? (a) 16.29 (b) 9.9 (c) 16.39 (d) 16.19
  22. 22.3.51 + 1.9 = ? (a) 5.51 (b) 3.7 (c) 5.41 (d) 5.31
  23. 23.5.21 + 7.1 = ? (a) 5.92 (b) 12.41 (c) 12.31 (d) 12.21
  24. 24.Which is the greatest: 0.683, 0.7, 0.026, 0.78? (a) 0.683 (b) 0.7 (c) 0.026 (d) 0.78
  25. 25.What is the value of the digit 2 in 15.627? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  26. 26.What is the value of the digit 7 in 32.687? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  27. 27.What is the value of the digit 4 in 27.549? (a) 0.004 (b) 4 (c) 0.4 (d) 0.04
  28. 28.Which is the greatest: 0.562, 0.071, 0.6, 0.65? (a) 0.562 (b) 0.071 (c) 0.6 (d) 0.65
  29. 29.Which is the smallest: 0.512, 0.041, 0.6, 0.64? (a) 0.512 (b) 0.041 (c) 0.6 (d) 0.64
  30. 30.Which is the smallest: 0.3, 0.272, 0.35, 0.014? (a) 0.3 (b) 0.272 (c) 0.35 (d) 0.014
  31. 31.4.26 + 4.1 = ? (a) 8.26 (b) 8.46 (c) 4.67 (d) 8.36
  32. 32.9.97 + 1.6 = ? (a) 10.13 (b) 11.47 (c) 11.67 (d) 11.57
  33. 33.Which is the smallest: 0.341, 0.41, 0.4, 0.024? (a) 0.341 (b) 0.41 (c) 0.4 (d) 0.024
  34. 34.Which is the smallest: 0.27, 0.191, 0.053, 0.2? (a) 0.27 (b) 0.191 (c) 0.053 (d) 0.2
  35. 35.What is the value of the digit 2 in 19.532? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  36. 36.Which is the greatest: 0.89, 0.8, 0.739, 0.069? (a) 0.89 (b) 0.8 (c) 0.739 (d) 0.069
  37. 37.What is the value of the digit 2 in 78.236? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  38. 38.What is the value of the digit 7 in 68.971? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  39. 39.6.47 + 6.8 = ? (a) 13.37 (b) 13.17 (c) 7.15 (d) 13.27
  40. 40.Which is the greatest: 0.053, 0.56, 0.471, 0.5? (a) 0.053 (b) 0.56 (c) 0.471 (d) 0.5

Answer key

  1. 10.11
  2. 6
  3. 5.21
  4. 0.09
  5. 0.37
  6. 12.93
  7. 6.04
  8. 8.69
  9. 0.24
  10. 0.02
  11. 8.99
  12. 0.7
  13. 0.086
  14. 11.93
  15. 11.69
  16. 11.08
  17. 0.28
  18. 0.1
  19. 15.44
  20. 1
  21. 16.29
  22. 5.41
  23. 12.31
  24. 0.78
  25. 0.02
  26. 0.007
  27. 0.04
  28. 0.65
  29. 0.041
  30. 0.014
  31. 8.36
  32. 11.57
  33. 0.024
  34. 0.053
  35. 0.002
  36. 0.89
  37. 0.2
  38. 0.07
  39. 13.27
  40. 0.56

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