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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 33 · 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. 1.5.62 + 3.4 = ? (a) 5.96 (b) 8.92 (c) 9.12 (d) 9.02
  2. 2.2.93 + 4.8 = ? (a) 7.83 (b) 3.41 (c) 7.73 (d) 7.63
  3. 3.9.14 + 7.6 = ? (a) 9.9 (b) 16.74 (c) 16.84 (d) 16.64
  4. 4.Which is the greatest: 0.3, 0.043, 0.257, 0.33? (a) 0.3 (b) 0.043 (c) 0.257 (d) 0.33
  5. 5.6.02 + 8.3 = ? (a) 6.85 (b) 14.42 (c) 14.32 (d) 14.22
  6. 6.5.79 + 8.1 = ? (a) 13.99 (b) 6.6 (c) 13.89 (d) 13.79
  7. 7.3.53 + 4.7 = ? (a) 4 (b) 8.33 (c) 8.23 (d) 8.13
  8. 8.What is the value of the digit 4 in 47.536? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  9. 9.What is the value of the digit 7 in 39.678? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  10. 10.Which is the greatest: 0.65, 0.6, 0.013, 0.592? (a) 0.65 (b) 0.6 (c) 0.013 (d) 0.592
  11. 11.Which is the greatest: 0.4, 0.361, 0.063, 0.44? (a) 0.4 (b) 0.361 (c) 0.063 (d) 0.44
  12. 12.What is the value of the digit 1 in 23.185? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  13. 13.What is the value of the digit 5 in 19.257? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  14. 14.What is the value of the digit 2 in 12.935? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  15. 15.Which is the smallest: 0.136, 0.26, 0.2, 0.041? (a) 0.136 (b) 0.26 (c) 0.2 (d) 0.041
  16. 16.Which is the greatest: 0.029, 0.125, 0.2, 0.21? (a) 0.029 (b) 0.125 (c) 0.2 (d) 0.21
  17. 17.What is the value of the digit 3 in 31.568? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  18. 18.Which is the greatest: 0.637, 0.019, 0.73, 0.7? (a) 0.637 (b) 0.019 (c) 0.73 (d) 0.7
  19. 19.What is the value of the digit 4 in 53.748? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  20. 20.Which is the greatest: 0.35, 0.072, 0.211, 0.3? (a) 0.35 (b) 0.072 (c) 0.211 (d) 0.3
  21. 21.Which is the greatest: 0.3, 0.37, 0.229, 0.038? (a) 0.3 (b) 0.37 (c) 0.229 (d) 0.038
  22. 22.What is the value of the digit 2 in 23.498? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  23. 23.4.07 + 1.3 = ? (a) 4.2 (b) 5.37 (c) 5.47 (d) 5.27
  24. 24.7.09 + 8.4 = ? (a) 15.59 (b) 15.39 (c) 7.93 (d) 15.49
  25. 25.What is the value of the digit 9 in 29.631? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  26. 26.Which is the greatest: 0.045, 0.112, 0.2, 0.27? (a) 0.045 (b) 0.112 (c) 0.2 (d) 0.27
  27. 27.What is the value of the digit 1 in 16.783? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  28. 28.3.13 + 1.7 = ? (a) 4.93 (b) 3.3 (c) 4.73 (d) 4.83
  29. 29.7.54 + 6.9 = ? (a) 8.23 (b) 14.44 (c) 14.34 (d) 14.54
  30. 30.What is the value of the digit 1 in 58.916? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  31. 31.What is the value of the digit 3 in 64.382? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  32. 32.Which is the greatest: 0.81, 0.012, 0.8, 0.743? (a) 0.81 (b) 0.012 (c) 0.8 (d) 0.743
  33. 33.Which is the greatest: 0.5, 0.029, 0.55, 0.417? (a) 0.5 (b) 0.029 (c) 0.55 (d) 0.417
  34. 34.2.71 + 1.2 = ? (a) 4.01 (b) 3.81 (c) 2.83 (d) 3.91
  35. 35.Which is the greatest: 0.726, 0.042, 0.8, 0.82? (a) 0.726 (b) 0.042 (c) 0.8 (d) 0.82
  36. 36.8.27 + 7.8 = ? (a) 15.97 (b) 16.17 (c) 16.07 (d) 9.05
  37. 37.1.17 + 2.1 = ? (a) 3.27 (b) 3.37 (c) 3.17 (d) 1.38
  38. 38.What is the value of the digit 3 in 89.137? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  39. 39.8.89 + 7.1 = ? (a) 16.09 (b) 15.99 (c) 15.89 (d) 9.6
  40. 40.Which is the smallest: 0.4, 0.45, 0.046, 0.329? (a) 0.4 (b) 0.45 (c) 0.046 (d) 0.329

Answer key

  1. 9.02
  2. 7.73
  3. 16.74
  4. 0.33
  5. 14.32
  6. 13.89
  7. 8.23
  8. 40
  9. 0.07
  10. 0.65
  11. 0.44
  12. 0.1
  13. 0.05
  14. 2
  15. 0.041
  16. 0.21
  17. 30
  18. 0.73
  19. 0.04
  20. 0.35
  21. 0.37
  22. 20
  23. 5.37
  24. 15.49
  25. 9
  26. 0.27
  27. 10
  28. 4.83
  29. 14.44
  30. 0.01
  31. 0.3
  32. 0.81
  33. 0.55
  34. 3.91
  35. 0.82
  36. 16.07
  37. 3.27
  38. 0.03
  39. 15.99
  40. 0.046

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