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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 100 · 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. 1.5.88 + 2.5 = ? (a) 8.38 (b) 8.28 (c) 6.13 (d) 8.48
  2. 2.What is the value of the digit 7 in 26.157? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  3. 3.6.49 + 6.7 = ? (a) 13.29 (b) 13.19 (c) 13.09 (d) 7.16
  4. 4.1.96 + 8.7 = ? (a) 10.56 (b) 10.66 (c) 2.83 (d) 10.76
  5. 5.Which is the greatest: 0.222, 0.047, 0.3, 0.32? (a) 0.222 (b) 0.047 (c) 0.3 (d) 0.32
  6. 6.What is the value of the digit 6 in 43.986? (a) 0.006 (b) 0.06 (c) 6 (d) 0.6
  7. 7.5.59 + 2.1 = ? (a) 7.69 (b) 5.8 (c) 7.79 (d) 7.59
  8. 8.What is the value of the digit 6 in 57.682? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  9. 9.5.78 + 1.7 = ? (a) 7.48 (b) 7.58 (c) 5.95 (d) 7.38
  10. 10.What is the value of the digit 3 in 32.859? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  11. 11.Which is the greatest: 0.022, 0.297, 0.38, 0.3? (a) 0.022 (b) 0.297 (c) 0.38 (d) 0.3
  12. 12.What is the value of the digit 9 in 29.458? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  13. 13.Which is the greatest: 0.035, 0.82, 0.726, 0.8? (a) 0.035 (b) 0.82 (c) 0.726 (d) 0.8
  14. 14.Which is the smallest: 0.128, 0.011, 0.27, 0.2? (a) 0.128 (b) 0.011 (c) 0.27 (d) 0.2
  15. 15.Which is the smallest: 0.5, 0.018, 0.434, 0.51? (a) 0.5 (b) 0.018 (c) 0.434 (d) 0.51
  16. 16.Which is the greatest: 0.7, 0.631, 0.036, 0.77? (a) 0.7 (b) 0.631 (c) 0.036 (d) 0.77
  17. 17.What is the value of the digit 1 in 91.254? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  18. 18.5.02 + 1.2 = ? (a) 6.12 (b) 6.32 (c) 6.22 (d) 5.14
  19. 19.What is the value of the digit 2 in 32.751? (a) 2 (b) 20 (c) 0.2 (d) 0.02
  20. 20.Which is the greatest: 0.33, 0.251, 0.048, 0.3? (a) 0.33 (b) 0.251 (c) 0.048 (d) 0.3
  21. 21.3.17 + 1.9 = ? (a) 5.07 (b) 4.97 (c) 5.17 (d) 3.36
  22. 22.Which is the smallest: 0.466, 0.5, 0.085, 0.53? (a) 0.466 (b) 0.5 (c) 0.085 (d) 0.53
  23. 23.What is the value of the digit 2 in 32.948? (a) 2 (b) 20 (c) 0.2 (d) 0.02
  24. 24.What is the value of the digit 6 in 29.176? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  25. 25.7.18 + 1.2 = ? (a) 8.48 (b) 7.3 (c) 8.38 (d) 8.28
  26. 26.Which is the smallest: 0.3, 0.35, 0.031, 0.243? (a) 0.3 (b) 0.35 (c) 0.031 (d) 0.243
  27. 27.5.06 + 1.2 = ? (a) 6.36 (b) 6.16 (c) 5.18 (d) 6.26
  28. 28.2.22 + 5.7 = ? (a) 2.79 (b) 8.02 (c) 7.92 (d) 7.82
  29. 29.What is the value of the digit 8 in 38.571? (a) 8 (b) 80 (c) 0.8 (d) 0.08
  30. 30.Which is the greatest: 0.6, 0.66, 0.062, 0.591? (a) 0.6 (b) 0.66 (c) 0.062 (d) 0.591
  31. 31.What is the value of the digit 2 in 25.743? (a) 0.2 (b) 2 (c) 0.02 (d) 20
  32. 32.What is the value of the digit 6 in 67.425? (a) 60 (b) 0.6 (c) 0.06 (d) 6
  33. 33.What is the value of the digit 7 in 97.815? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  34. 34.What is the value of the digit 9 in 32.964? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  35. 35.Which is the smallest: 0.215, 0.35, 0.3, 0.063? (a) 0.215 (b) 0.35 (c) 0.3 (d) 0.063
  36. 36.2.75 + 1.3 = ? (a) 4.15 (b) 2.88 (c) 4.05 (d) 3.95
  37. 37.2.51 + 5.4 = ? (a) 7.91 (b) 3.05 (c) 8.01 (d) 7.81
  38. 38.Which is the greatest: 0.78, 0.691, 0.7, 0.015? (a) 0.78 (b) 0.691 (c) 0.7 (d) 0.015
  39. 39.Which is the greatest: 0.538, 0.012, 0.6, 0.61? (a) 0.538 (b) 0.012 (c) 0.6 (d) 0.61
  40. 40.7.84 + 1.7 = ? (a) 9.44 (b) 9.54 (c) 8.01 (d) 9.64

Answer key

  1. 8.38
  2. 0.007
  3. 13.19
  4. 10.66
  5. 0.32
  6. 0.006
  7. 7.69
  8. 0.6
  9. 7.48
  10. 30
  11. 0.38
  12. 9
  13. 0.82
  14. 0.011
  15. 0.018
  16. 0.77
  17. 1
  18. 6.22
  19. 2
  20. 0.33
  21. 5.07
  22. 0.085
  23. 2
  24. 0.006
  25. 8.38
  26. 0.031
  27. 6.26
  28. 7.92
  29. 8
  30. 0.66
  31. 20
  32. 60
  33. 7
  34. 0.9
  35. 0.063
  36. 4.05
  37. 7.91
  38. 0.78
  39. 0.61
  40. 9.54

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