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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 362 · 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. 1.8.57 + 9.8 = ? (a) 18.27 (b) 18.37 (c) 9.55 (d) 18.47
  2. 2.What is the value of the digit 5 in 52.147? (a) 50 (b) 5 (c) 0.5 (d) 0.05
  3. 3.Which is the greatest: 0.65, 0.056, 0.517, 0.6? (a) 0.65 (b) 0.056 (c) 0.517 (d) 0.6
  4. 4.3.03 + 9.2 = ? (a) 12.33 (b) 12.13 (c) 3.95 (d) 12.23
  5. 5.What is the value of the digit 1 in 78.142? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  6. 6.Which is the smallest: 0.45, 0.399, 0.012, 0.4? (a) 0.45 (b) 0.399 (c) 0.012 (d) 0.4
  7. 7.6.97 + 4.5 = ? (a) 11.37 (b) 7.42 (c) 11.47 (d) 11.57
  8. 8.8.31 + 1.7 = ? (a) 10.01 (b) 10.11 (c) 8.48 (d) 9.91
  9. 9.2.01 + 9.8 = ? (a) 11.91 (b) 11.81 (c) 2.99 (d) 11.71
  10. 10.8.22 + 2.3 = ? (a) 10.42 (b) 10.62 (c) 10.52 (d) 8.45
  11. 11.1.39 + 3.1 = ? (a) 4.59 (b) 4.39 (c) 1.7 (d) 4.49
  12. 12.What is the value of the digit 2 in 13.952? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  13. 13.Which is the greatest: 0.3, 0.074, 0.236, 0.36? (a) 0.3 (b) 0.074 (c) 0.236 (d) 0.36
  14. 14.What is the value of the digit 6 in 81.426? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  15. 15.Which is the greatest: 0.31, 0.093, 0.261, 0.3? (a) 0.31 (b) 0.093 (c) 0.261 (d) 0.3
  16. 16.8.31 + 9.1 = ? (a) 9.22 (b) 17.31 (c) 17.41 (d) 17.51
  17. 17.Which is the greatest: 0.041, 0.192, 0.28, 0.2? (a) 0.041 (b) 0.192 (c) 0.28 (d) 0.2
  18. 18.9.53 + 9.7 = ? (a) 19.33 (b) 10.5 (c) 19.13 (d) 19.23
  19. 19.2.75 + 1.4 = ? (a) 4.25 (b) 2.89 (c) 4.15 (d) 4.05
  20. 20.6.15 + 7.1 = ? (a) 13.25 (b) 13.35 (c) 13.15 (d) 6.86
  21. 21.Which is the greatest: 0.324, 0.43, 0.4, 0.033? (a) 0.324 (b) 0.43 (c) 0.4 (d) 0.033
  22. 22.6.41 + 5.2 = ? (a) 11.61 (b) 6.93 (c) 11.51 (d) 11.71
  23. 23.What is the value of the digit 7 in 58.174? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  24. 24.Which is the greatest: 0.7, 0.73, 0.081, 0.646? (a) 0.7 (b) 0.73 (c) 0.081 (d) 0.646
  25. 25.Which is the greatest: 0.466, 0.5, 0.021, 0.55? (a) 0.466 (b) 0.5 (c) 0.021 (d) 0.55
  26. 26.What is the value of the digit 5 in 58.641? (a) 5 (b) 50 (c) 0.5 (d) 0.05
  27. 27.1.43 + 1.8 = ? (a) 3.13 (b) 3.23 (c) 3.33 (d) 1.61
  28. 28.Which is the greatest: 0.011, 0.5, 0.56, 0.414? (a) 0.011 (b) 0.5 (c) 0.56 (d) 0.414
  29. 29.Which is the smallest: 0.131, 0.2, 0.28, 0.064? (a) 0.131 (b) 0.2 (c) 0.28 (d) 0.064
  30. 30.6.82 + 3.4 = ? (a) 10.12 (b) 10.22 (c) 10.32 (d) 7.16
  31. 31.What is the value of the digit 4 in 94.782? (a) 40 (b) 0.04 (c) 4 (d) 0.4
  32. 32.9.47 + 7.1 = ? (a) 16.67 (b) 16.47 (c) 16.57 (d) 10.18
  33. 33.What is the value of the digit 2 in 14.293? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  34. 34.Which is the smallest: 0.328, 0.43, 0.069, 0.4? (a) 0.328 (b) 0.43 (c) 0.069 (d) 0.4
  35. 35.What is the value of the digit 3 in 94.736? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  36. 36.1.55 + 8.8 = ? (a) 10.45 (b) 10.35 (c) 2.43 (d) 10.25
  37. 37.7.91 + 2.2 = ? (a) 8.13 (b) 10.01 (c) 10.21 (d) 10.11
  38. 38.8.22 + 7.5 = ? (a) 8.97 (b) 15.62 (c) 15.72 (d) 15.82
  39. 39.Which is the smallest: 0.2, 0.25, 0.049, 0.115? (a) 0.2 (b) 0.25 (c) 0.049 (d) 0.115
  40. 40.4.22 + 8.8 = ? (a) 13.02 (b) 12.92 (c) 5.1 (d) 13.12

Answer key

  1. 18.37
  2. 50
  3. 0.65
  4. 12.23
  5. 0.1
  6. 0.012
  7. 11.47
  8. 10.01
  9. 11.81
  10. 10.52
  11. 4.49
  12. 0.002
  13. 0.36
  14. 0.006
  15. 0.31
  16. 17.41
  17. 0.28
  18. 19.23
  19. 4.15
  20. 13.25
  21. 0.43
  22. 11.61
  23. 0.07
  24. 0.73
  25. 0.55
  26. 50
  27. 3.23
  28. 0.56
  29. 0.064
  30. 10.22
  31. 4
  32. 16.57
  33. 0.2
  34. 0.069
  35. 0.03
  36. 10.35
  37. 10.11
  38. 15.72
  39. 0.049
  40. 13.02

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