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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 501 · 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. 1.9.06 + 9.6 = ? (a) 10.02 (b) 18.76 (c) 18.56 (d) 18.66
  2. 2.What is the value of the digit 2 in 72.436? (a) 2 (b) 0.02 (c) 20 (d) 0.2
  3. 3.What is the value of the digit 7 in 98.637? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  4. 4.What is the value of the digit 1 in 29.617? (a) 1 (b) 0.001 (c) 0.1 (d) 0.01
  5. 5.2.92 + 9.8 = ? (a) 3.9 (b) 12.72 (c) 12.82 (d) 12.62
  6. 6.Which is the smallest: 0.28, 0.138, 0.069, 0.2? (a) 0.28 (b) 0.138 (c) 0.069 (d) 0.2
  7. 7.Which is the smallest: 0.6, 0.67, 0.032, 0.542? (a) 0.6 (b) 0.67 (c) 0.032 (d) 0.542
  8. 8.Which is the smallest: 0.454, 0.57, 0.069, 0.5? (a) 0.454 (b) 0.57 (c) 0.069 (d) 0.5
  9. 9.What is the value of the digit 3 in 75.843? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003
  10. 10.2.76 + 6.4 = ? (a) 9.06 (b) 9.26 (c) 3.4 (d) 9.16
  11. 11.Which is the greatest: 0.26, 0.151, 0.071, 0.2? (a) 0.26 (b) 0.151 (c) 0.071 (d) 0.2
  12. 12.What is the value of the digit 3 in 42.713? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  13. 13.Which is the smallest: 0.388, 0.071, 0.4, 0.49? (a) 0.388 (b) 0.071 (c) 0.4 (d) 0.49
  14. 14.What is the value of the digit 6 in 65.823? (a) 60 (b) 0.6 (c) 0.06 (d) 6
  15. 15.Which is the smallest: 0.327, 0.018, 0.4, 0.44? (a) 0.327 (b) 0.018 (c) 0.4 (d) 0.44
  16. 16.Which is the greatest: 0.258, 0.33, 0.036, 0.3? (a) 0.258 (b) 0.33 (c) 0.036 (d) 0.3
  17. 17.Which is the smallest: 0.063, 0.6, 0.552, 0.63? (a) 0.063 (b) 0.6 (c) 0.552 (d) 0.63
  18. 18.Which is the smallest: 0.57, 0.035, 0.441, 0.5? (a) 0.57 (b) 0.035 (c) 0.441 (d) 0.5
  19. 19.What is the value of the digit 6 in 63.519? (a) 0.06 (b) 0.6 (c) 60 (d) 6
  20. 20.7.78 + 7.6 = ? (a) 8.54 (b) 15.38 (c) 15.48 (d) 15.28
  21. 21.4.14 + 5.6 = ? (a) 9.84 (b) 9.64 (c) 4.7 (d) 9.74
  22. 22.Which is the greatest: 0.2, 0.21, 0.065, 0.162? (a) 0.2 (b) 0.21 (c) 0.065 (d) 0.162
  23. 23.Which is the smallest: 0.022, 0.53, 0.481, 0.5? (a) 0.022 (b) 0.53 (c) 0.481 (d) 0.5
  24. 24.1.53 + 3.1 = ? (a) 1.84 (b) 4.73 (c) 4.63 (d) 4.53
  25. 25.9.55 + 7.8 = ? (a) 10.33 (b) 17.35 (c) 17.25 (d) 17.45
  26. 26.Which is the smallest: 0.59, 0.5, 0.012, 0.416? (a) 0.59 (b) 0.5 (c) 0.012 (d) 0.416
  27. 27.What is the value of the digit 8 in 48.275? (a) 0.8 (b) 0.08 (c) 8 (d) 80
  28. 28.8.49 + 9.1 = ? (a) 17.59 (b) 17.69 (c) 9.4 (d) 17.49
  29. 29.5.42 + 3.4 = ? (a) 8.72 (b) 8.92 (c) 5.76 (d) 8.82
  30. 30.Which is the smallest: 0.59, 0.053, 0.5, 0.416? (a) 0.59 (b) 0.053 (c) 0.5 (d) 0.416
  31. 31.What is the value of the digit 7 in 67.239? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  32. 32.Which is the greatest: 0.2, 0.017, 0.167, 0.21? (a) 0.2 (b) 0.017 (c) 0.167 (d) 0.21
  33. 33.7.45 + 6.3 = ? (a) 13.65 (b) 8.08 (c) 13.75 (d) 13.85
  34. 34.Which is the greatest: 0.635, 0.7, 0.043, 0.75? (a) 0.635 (b) 0.7 (c) 0.043 (d) 0.75
  35. 35.Which is the greatest: 0.042, 0.34, 0.237, 0.3? (a) 0.042 (b) 0.34 (c) 0.237 (d) 0.3
  36. 36.What is the value of the digit 7 in 37.614? (a) 7 (b) 70 (c) 0.07 (d) 0.7
  37. 37.7.71 + 1.4 = ? (a) 7.85 (b) 9.21 (c) 9.01 (d) 9.11
  38. 38.7.48 + 5.8 = ? (a) 13.38 (b) 13.18 (c) 13.28 (d) 8.06
  39. 39.What is the value of the digit 1 in 52.318? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  40. 40.3.91 + 2.9 = ? (a) 4.2 (b) 6.71 (c) 6.91 (d) 6.81

Answer key

  1. 18.66
  2. 2
  3. 0.007
  4. 0.01
  5. 12.72
  6. 0.069
  7. 0.032
  8. 0.069
  9. 0.003
  10. 9.16
  11. 0.26
  12. 0.003
  13. 0.071
  14. 60
  15. 0.018
  16. 0.33
  17. 0.063
  18. 0.035
  19. 60
  20. 15.38
  21. 9.74
  22. 0.21
  23. 0.022
  24. 4.63
  25. 17.35
  26. 0.012
  27. 8
  28. 17.59
  29. 8.82
  30. 0.053
  31. 7
  32. 0.21
  33. 13.75
  34. 0.75
  35. 0.34
  36. 7
  37. 9.11
  38. 13.28
  39. 0.01
  40. 6.81

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