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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 857 · 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. 1.8.81 + 7.1 = ? (a) 15.91 (b) 16.01 (c) 9.52 (d) 15.81
  2. 2.Which is the smallest: 0.011, 0.23, 0.2, 0.137? (a) 0.011 (b) 0.23 (c) 0.2 (d) 0.137
  3. 3.What is the value of the digit 9 in 96.281? (a) 0.9 (b) 90 (c) 9 (d) 0.09
  4. 4.7.67 + 6.4 = ? (a) 8.31 (b) 14.17 (c) 13.97 (d) 14.07
  5. 5.What is the value of the digit 1 in 23.518? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  6. 6.7.57 + 4.1 = ? (a) 11.77 (b) 11.57 (c) 11.67 (d) 7.98
  7. 7.6.22 + 2.1 = ? (a) 8.32 (b) 8.22 (c) 6.43 (d) 8.42
  8. 8.Which is the greatest: 0.63, 0.047, 0.6, 0.513? (a) 0.63 (b) 0.047 (c) 0.6 (d) 0.513
  9. 9.Which is the greatest: 0.83, 0.8, 0.035, 0.761? (a) 0.83 (b) 0.8 (c) 0.035 (d) 0.761
  10. 10.What is the value of the digit 1 in 56.421? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  11. 11.What is the value of the digit 2 in 91.253? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  12. 12.9.87 + 9.3 = ? (a) 10.8 (b) 19.27 (c) 19.17 (d) 19.07
  13. 13.1.12 + 3.2 = ? (a) 4.42 (b) 4.22 (c) 1.44 (d) 4.32
  14. 14.6.01 + 7.4 = ? (a) 6.75 (b) 13.31 (c) 13.51 (d) 13.41
  15. 15.Which is the greatest: 0.8, 0.034, 0.725, 0.85? (a) 0.8 (b) 0.034 (c) 0.725 (d) 0.85
  16. 16.5.73 + 8.6 = ? (a) 6.59 (b) 14.43 (c) 14.33 (d) 14.23
  17. 17.What is the value of the digit 3 in 83.517? (a) 0.03 (b) 0.3 (c) 30 (d) 3
  18. 18.9.71 + 6.2 = ? (a) 10.33 (b) 16.01 (c) 15.81 (d) 15.91
  19. 19.9.78 + 3.6 = ? (a) 10.14 (b) 13.38 (c) 13.28 (d) 13.48
  20. 20.Which is the greatest: 0.011, 0.47, 0.4, 0.353? (a) 0.011 (b) 0.47 (c) 0.4 (d) 0.353
  21. 21.What is the value of the digit 3 in 25.938? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  22. 22.What is the value of the digit 3 in 58.136? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  23. 23.What is the value of the digit 6 in 61.592? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  24. 24.What is the value of the digit 2 in 84.521? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  25. 25.Which is the greatest: 0.532, 0.081, 0.6, 0.62? (a) 0.532 (b) 0.081 (c) 0.6 (d) 0.62
  26. 26.What is the value of the digit 5 in 54.182? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  27. 27.What is the value of the digit 6 in 47.136? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  28. 28.Which is the greatest: 0.033, 0.89, 0.8, 0.741? (a) 0.033 (b) 0.89 (c) 0.8 (d) 0.741
  29. 29.4.11 + 8.4 = ? (a) 12.51 (b) 4.95 (c) 12.41 (d) 12.61
  30. 30.7.21 + 2.1 = ? (a) 9.41 (b) 7.42 (c) 9.21 (d) 9.31
  31. 31.Which is the smallest: 0.183, 0.25, 0.2, 0.074? (a) 0.183 (b) 0.25 (c) 0.2 (d) 0.074
  32. 32.4.86 + 3.7 = ? (a) 8.56 (b) 8.46 (c) 5.23 (d) 8.66
  33. 33.8.37 + 1.2 = ? (a) 9.47 (b) 9.67 (c) 8.49 (d) 9.57
  34. 34.Which is the smallest: 0.443, 0.59, 0.075, 0.5? (a) 0.443 (b) 0.59 (c) 0.075 (d) 0.5
  35. 35.What is the value of the digit 2 in 17.624? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  36. 36.What is the value of the digit 7 in 87.254? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  37. 37.5.74 + 2.4 = ? (a) 8.04 (b) 8.24 (c) 8.14 (d) 5.98
  38. 38.What is the value of the digit 9 in 76.391? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  39. 39.Which is the greatest: 0.015, 0.553, 0.6, 0.67? (a) 0.015 (b) 0.553 (c) 0.6 (d) 0.67
  40. 40.5.05 + 6.3 = ? (a) 5.68 (b) 11.35 (c) 11.45 (d) 11.25

Answer key

  1. 15.91
  2. 0.011
  3. 90
  4. 14.07
  5. 0.01
  6. 11.67
  7. 8.32
  8. 0.63
  9. 0.83
  10. 0.001
  11. 0.2
  12. 19.17
  13. 4.32
  14. 13.41
  15. 0.85
  16. 14.33
  17. 3
  18. 15.91
  19. 13.38
  20. 0.47
  21. 0.03
  22. 0.03
  23. 60
  24. 0.02
  25. 0.62
  26. 50
  27. 0.006
  28. 0.89
  29. 12.51
  30. 9.31
  31. 0.074
  32. 8.56
  33. 9.57
  34. 0.075
  35. 0.02
  36. 7
  37. 8.14
  38. 0.09
  39. 0.67
  40. 11.35

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