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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 45 · 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. 1.3.49 + 9.7 = ? (a) 4.46 (b) 13.09 (c) 13.29 (d) 13.19
  2. 2.What is the value of the digit 4 in 32.947? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  3. 3.What is the value of the digit 1 in 26.581? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  4. 4.9.81 + 2.1 = ? (a) 11.81 (b) 11.91 (c) 10.02 (d) 12.01
  5. 5.2.13 + 4.6 = ? (a) 2.59 (b) 6.63 (c) 6.73 (d) 6.83
  6. 6.What is the value of the digit 4 in 19.427? (a) 0.04 (b) 0.4 (c) 0.004 (d) 4
  7. 7.6.72 + 2.2 = ? (a) 9.02 (b) 8.82 (c) 6.94 (d) 8.92
  8. 8.Which is the smallest: 0.4, 0.392, 0.066, 0.48? (a) 0.4 (b) 0.392 (c) 0.066 (d) 0.48
  9. 9.3.82 + 9.5 = ? (a) 13.42 (b) 13.32 (c) 4.77 (d) 13.22
  10. 10.7.21 + 7.9 = ? (a) 15.01 (b) 15.11 (c) 15.21 (d) 8
  11. 11.5.12 + 5.3 = ? (a) 5.65 (b) 10.42 (c) 10.32 (d) 10.52
  12. 12.2.78 + 5.4 = ? (a) 3.32 (b) 8.08 (c) 8.18 (d) 8.28
  13. 13.1.51 + 4.4 = ? (a) 1.95 (b) 6.01 (c) 5.81 (d) 5.91
  14. 14.What is the value of the digit 6 in 52.196? (a) 0.06 (b) 6 (c) 0.006 (d) 0.6
  15. 15.Which is the smallest: 0.532, 0.64, 0.024, 0.6? (a) 0.532 (b) 0.64 (c) 0.024 (d) 0.6
  16. 16.Which is the greatest: 0.65, 0.513, 0.6, 0.053? (a) 0.65 (b) 0.513 (c) 0.6 (d) 0.053
  17. 17.Which is the greatest: 0.729, 0.83, 0.044, 0.8? (a) 0.729 (b) 0.83 (c) 0.044 (d) 0.8
  18. 18.Which is the greatest: 0.74, 0.7, 0.076, 0.642? (a) 0.74 (b) 0.7 (c) 0.076 (d) 0.642
  19. 19.What is the value of the digit 1 in 81.246? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  20. 20.What is the value of the digit 7 in 17.835? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  21. 21.What is the value of the digit 1 in 56.917? (a) 0.001 (b) 0.1 (c) 0.01 (d) 1
  22. 22.Which is the greatest: 0.789, 0.82, 0.8, 0.074? (a) 0.789 (b) 0.82 (c) 0.8 (d) 0.074
  23. 23.2.92 + 6.6 = ? (a) 3.58 (b) 9.62 (c) 9.52 (d) 9.42
  24. 24.6.92 + 7.4 = ? (a) 14.32 (b) 14.22 (c) 7.66 (d) 14.42
  25. 25.2.18 + 9.9 = ? (a) 12.08 (b) 11.98 (c) 3.17 (d) 12.18
  26. 26.What is the value of the digit 5 in 65.913? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  27. 27.Which is the smallest: 0.151, 0.26, 0.2, 0.064? (a) 0.151 (b) 0.26 (c) 0.2 (d) 0.064
  28. 28.Which is the greatest: 0.2, 0.177, 0.039, 0.25? (a) 0.2 (b) 0.177 (c) 0.039 (d) 0.25
  29. 29.Which is the greatest: 0.8, 0.88, 0.041, 0.763? (a) 0.8 (b) 0.88 (c) 0.041 (d) 0.763
  30. 30.9.46 + 6.5 = ? (a) 15.86 (b) 16.06 (c) 15.96 (d) 10.11
  31. 31.2.85 + 6.3 = ? (a) 9.25 (b) 9.05 (c) 3.48 (d) 9.15
  32. 32.Which is the greatest: 0.83, 0.8, 0.753, 0.066? (a) 0.83 (b) 0.8 (c) 0.753 (d) 0.066
  33. 33.7.62 + 7.6 = ? (a) 15.32 (b) 15.12 (c) 8.38 (d) 15.22
  34. 34.What is the value of the digit 1 in 37.891? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  35. 35.1.49 + 9.2 = ? (a) 10.69 (b) 2.41 (c) 10.79 (d) 10.59
  36. 36.2.99 + 5.5 = ? (a) 3.54 (b) 8.39 (c) 8.59 (d) 8.49
  37. 37.1.41 + 1.9 = ? (a) 3.21 (b) 1.6 (c) 3.41 (d) 3.31
  38. 38.What is the value of the digit 5 in 14.257? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  39. 39.Which is the greatest: 0.36, 0.3, 0.221, 0.013? (a) 0.36 (b) 0.3 (c) 0.221 (d) 0.013
  40. 40.9.79 + 1.2 = ? (a) 10.89 (b) 9.91 (c) 11.09 (d) 10.99

Answer key

  1. 13.19
  2. 0.04
  3. 0.001
  4. 11.91
  5. 6.73
  6. 0.4
  7. 8.92
  8. 0.066
  9. 13.32
  10. 15.11
  11. 10.42
  12. 8.18
  13. 5.91
  14. 0.006
  15. 0.024
  16. 0.65
  17. 0.83
  18. 0.74
  19. 1
  20. 7
  21. 0.01
  22. 0.82
  23. 9.52
  24. 14.32
  25. 12.08
  26. 5
  27. 0.064
  28. 0.25
  29. 0.88
  30. 15.96
  31. 9.15
  32. 0.83
  33. 15.22
  34. 0.001
  35. 10.69
  36. 8.49
  37. 3.31
  38. 0.05
  39. 0.36
  40. 10.99

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