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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 79 · 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. 1.8.28 + 9.1 = ? (a) 9.19 (b) 17.38 (c) 17.48 (d) 17.28
  2. 2.7.43 + 7.4 = ? (a) 14.93 (b) 8.17 (c) 14.83 (d) 14.73
  3. 3.2.36 + 5.8 = ? (a) 8.06 (b) 2.94 (c) 8.16 (d) 8.26
  4. 4.Which is the greatest: 0.796, 0.012, 0.87, 0.8? (a) 0.796 (b) 0.012 (c) 0.87 (d) 0.8
  5. 5.Which is the greatest: 0.52, 0.498, 0.039, 0.5? (a) 0.52 (b) 0.498 (c) 0.039 (d) 0.5
  6. 6.Which is the smallest: 0.7, 0.022, 0.679, 0.73? (a) 0.7 (b) 0.022 (c) 0.679 (d) 0.73
  7. 7.What is the value of the digit 8 in 23.498? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  8. 8.What is the value of the digit 7 in 17.842? (a) 70 (b) 7 (c) 0.7 (d) 0.07
  9. 9.4.56 + 7.3 = ? (a) 11.96 (b) 11.76 (c) 11.86 (d) 5.29
  10. 10.Which is the smallest: 0.046, 0.69, 0.6, 0.555? (a) 0.046 (b) 0.69 (c) 0.6 (d) 0.555
  11. 11.2.35 + 2.2 = ? (a) 4.55 (b) 4.65 (c) 4.45 (d) 2.57
  12. 12.What is the value of the digit 2 in 94.862? (a) 2 (b) 0.2 (c) 0.02 (d) 0.002
  13. 13.4.06 + 9.3 = ? (a) 4.99 (b) 13.26 (c) 13.46 (d) 13.36
  14. 14.Which is the greatest: 0.23, 0.085, 0.2, 0.186? (a) 0.23 (b) 0.085 (c) 0.2 (d) 0.186
  15. 15.Which is the smallest: 0.51, 0.5, 0.437, 0.044? (a) 0.51 (b) 0.5 (c) 0.437 (d) 0.044
  16. 16.6.32 + 1.8 = ? (a) 6.5 (b) 8.12 (c) 8.22 (d) 8.02
  17. 17.Which is the greatest: 0.084, 0.85, 0.725, 0.8? (a) 0.084 (b) 0.85 (c) 0.725 (d) 0.8
  18. 18.4.65 + 9.6 = ? (a) 14.25 (b) 14.35 (c) 14.15 (d) 5.61
  19. 19.1.72 + 1.4 = ? (a) 3.22 (b) 3.02 (c) 3.12 (d) 1.86
  20. 20.Which is the greatest: 0.374, 0.064, 0.4, 0.48? (a) 0.374 (b) 0.064 (c) 0.4 (d) 0.48
  21. 21.9.08 + 2.1 = ? (a) 11.18 (b) 11.28 (c) 11.08 (d) 9.29
  22. 22.9.38 + 3.1 = ? (a) 12.38 (b) 9.69 (c) 12.48 (d) 12.58
  23. 23.1.41 + 5.3 = ? (a) 6.71 (b) 1.94 (c) 6.61 (d) 6.81
  24. 24.7.54 + 7.6 = ? (a) 8.3 (b) 15.14 (c) 15.04 (d) 15.24
  25. 25.1.69 + 7.3 = ? (a) 8.89 (b) 2.42 (c) 8.99 (d) 9.09
  26. 26.7.86 + 7.9 = ? (a) 15.66 (b) 8.65 (c) 15.86 (d) 15.76
  27. 27.What is the value of the digit 9 in 96.148? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  28. 28.8.63 + 9.1 = ? (a) 9.54 (b) 17.83 (c) 17.73 (d) 17.63
  29. 29.What is the value of the digit 9 in 97.281? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  30. 30.Which is the greatest: 0.042, 0.3, 0.32, 0.238? (a) 0.042 (b) 0.3 (c) 0.32 (d) 0.238
  31. 31.Which is the smallest: 0.53, 0.424, 0.018, 0.5? (a) 0.53 (b) 0.424 (c) 0.018 (d) 0.5
  32. 32.What is the value of the digit 9 in 43.519? (a) 0.09 (b) 0.9 (c) 0.009 (d) 9
  33. 33.What is the value of the digit 2 in 21.495? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  34. 34.What is the value of the digit 1 in 21.835? (a) 0.1 (b) 0.01 (c) 10 (d) 1
  35. 35.2.79 + 9.2 = ? (a) 3.71 (b) 11.99 (c) 12.09 (d) 11.89
  36. 36.Which is the greatest: 0.3, 0.278, 0.31, 0.061? (a) 0.3 (b) 0.278 (c) 0.31 (d) 0.061
  37. 37.Which is the smallest: 0.3, 0.091, 0.274, 0.37? (a) 0.3 (b) 0.091 (c) 0.274 (d) 0.37
  38. 38.5.27 + 8.9 = ? (a) 14.17 (b) 14.07 (c) 14.27 (d) 6.16
  39. 39.What is the value of the digit 9 in 63.894? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  40. 40.Which is the greatest: 0.079, 0.45, 0.4, 0.365? (a) 0.079 (b) 0.45 (c) 0.4 (d) 0.365

Answer key

  1. 17.38
  2. 14.83
  3. 8.16
  4. 0.87
  5. 0.52
  6. 0.022
  7. 0.008
  8. 7
  9. 11.86
  10. 0.046
  11. 4.55
  12. 0.002
  13. 13.36
  14. 0.23
  15. 0.044
  16. 8.12
  17. 0.85
  18. 14.25
  19. 3.12
  20. 0.48
  21. 11.18
  22. 12.48
  23. 6.71
  24. 15.14
  25. 8.99
  26. 15.76
  27. 90
  28. 17.73
  29. 90
  30. 0.32
  31. 0.018
  32. 0.009
  33. 20
  34. 1
  35. 11.99
  36. 0.31
  37. 0.091
  38. 14.17
  39. 0.09
  40. 0.45

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