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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 332 · 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.What is the value of the digit 8 in 84.715? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  2. 2.2.36 + 9.4 = ? (a) 11.66 (b) 11.86 (c) 3.3 (d) 11.76
  3. 3.7.13 + 8.4 = ? (a) 15.53 (b) 7.97 (c) 15.63 (d) 15.43
  4. 4.1.78 + 9.6 = ? (a) 11.28 (b) 2.74 (c) 11.38 (d) 11.48
  5. 5.Which is the greatest: 0.542, 0.6, 0.69, 0.088? (a) 0.542 (b) 0.6 (c) 0.69 (d) 0.088
  6. 6.5.44 + 3.1 = ? (a) 8.54 (b) 5.75 (c) 8.44 (d) 8.64
  7. 7.What is the value of the digit 8 in 68.713? (a) 80 (b) 0.8 (c) 8 (d) 0.08
  8. 8.2.46 + 1.6 = ? (a) 4.16 (b) 3.96 (c) 2.62 (d) 4.06
  9. 9.5.64 + 9.5 = ? (a) 15.04 (b) 15.14 (c) 6.59 (d) 15.24
  10. 10.Which is the smallest: 0.5, 0.423, 0.52, 0.067? (a) 0.5 (b) 0.423 (c) 0.52 (d) 0.067
  11. 11.Which is the smallest: 0.087, 0.7, 0.73, 0.693? (a) 0.087 (b) 0.7 (c) 0.73 (d) 0.693
  12. 12.Which is the greatest: 0.339, 0.44, 0.4, 0.033? (a) 0.339 (b) 0.44 (c) 0.4 (d) 0.033
  13. 13.Which is the smallest: 0.282, 0.33, 0.028, 0.3? (a) 0.282 (b) 0.33 (c) 0.028 (d) 0.3
  14. 14.6.06 + 7.8 = ? (a) 6.84 (b) 13.96 (c) 13.86 (d) 13.76
  15. 15.Which is the smallest: 0.8, 0.723, 0.019, 0.85? (a) 0.8 (b) 0.723 (c) 0.019 (d) 0.85
  16. 16.Which is the greatest: 0.65, 0.014, 0.6, 0.521? (a) 0.65 (b) 0.014 (c) 0.6 (d) 0.521
  17. 17.Which is the greatest: 0.034, 0.36, 0.3, 0.255? (a) 0.034 (b) 0.36 (c) 0.3 (d) 0.255
  18. 18.Which is the smallest: 0.081, 0.35, 0.3, 0.297? (a) 0.081 (b) 0.35 (c) 0.3 (d) 0.297
  19. 19.What is the value of the digit 9 in 16.429? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  20. 20.Which is the smallest: 0.35, 0.269, 0.3, 0.025? (a) 0.35 (b) 0.269 (c) 0.3 (d) 0.025
  21. 21.What is the value of the digit 1 in 62.714? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  22. 22.8.66 + 4.3 = ? (a) 13.06 (b) 9.09 (c) 12.96 (d) 12.86
  23. 23.4.33 + 8.2 = ? (a) 5.15 (b) 12.43 (c) 12.53 (d) 12.63
  24. 24.What is the value of the digit 8 in 52.184? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  25. 25.1.41 + 9.2 = ? (a) 2.33 (b) 10.51 (c) 10.71 (d) 10.61
  26. 26.Which is the greatest: 0.581, 0.62, 0.069, 0.6? (a) 0.581 (b) 0.62 (c) 0.069 (d) 0.6
  27. 27.4.11 + 4.2 = ? (a) 8.31 (b) 4.53 (c) 8.41 (d) 8.21
  28. 28.3.54 + 5.4 = ? (a) 9.04 (b) 8.94 (c) 4.08 (d) 8.84
  29. 29.Which is the smallest: 0.25, 0.111, 0.061, 0.2? (a) 0.25 (b) 0.111 (c) 0.061 (d) 0.2
  30. 30.3.12 + 8.2 = ? (a) 3.94 (b) 11.32 (c) 11.42 (d) 11.22
  31. 31.What is the value of the digit 5 in 69.587? (a) 0.05 (b) 0.005 (c) 5 (d) 0.5
  32. 32.Which is the greatest: 0.31, 0.035, 0.3, 0.242? (a) 0.31 (b) 0.035 (c) 0.3 (d) 0.242
  33. 33.8.01 + 3.2 = ? (a) 8.33 (b) 11.21 (c) 11.31 (d) 11.11
  34. 34.Which is the greatest: 0.039, 0.5, 0.51, 0.439? (a) 0.039 (b) 0.5 (c) 0.51 (d) 0.439
  35. 35.Which is the greatest: 0.053, 0.537, 0.6, 0.67? (a) 0.053 (b) 0.537 (c) 0.6 (d) 0.67
  36. 36.1.23 + 2.8 = ? (a) 3.93 (b) 4.13 (c) 1.51 (d) 4.03
  37. 37.9.37 + 8.3 = ? (a) 10.2 (b) 17.77 (c) 17.57 (d) 17.67
  38. 38.Which is the smallest: 0.071, 0.35, 0.3, 0.247? (a) 0.071 (b) 0.35 (c) 0.3 (d) 0.247
  39. 39.Which is the smallest: 0.394, 0.45, 0.4, 0.083? (a) 0.394 (b) 0.45 (c) 0.4 (d) 0.083
  40. 40.9.04 + 2.1 = ? (a) 11.14 (b) 11.24 (c) 11.04 (d) 9.25

Answer key

  1. 80
  2. 11.76
  3. 15.53
  4. 11.38
  5. 0.69
  6. 8.54
  7. 8
  8. 4.06
  9. 15.14
  10. 0.067
  11. 0.087
  12. 0.44
  13. 0.028
  14. 13.86
  15. 0.019
  16. 0.65
  17. 0.36
  18. 0.081
  19. 0.009
  20. 0.025
  21. 0.01
  22. 12.96
  23. 12.53
  24. 0.08
  25. 10.61
  26. 0.62
  27. 8.31
  28. 8.94
  29. 0.061
  30. 11.32
  31. 0.5
  32. 0.31
  33. 11.21
  34. 0.51
  35. 0.67
  36. 4.03
  37. 17.67
  38. 0.071
  39. 0.083
  40. 11.14

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