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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 438 · 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.Which is the greatest: 0.089, 0.242, 0.3, 0.38? (a) 0.089 (b) 0.242 (c) 0.3 (d) 0.38
  2. 2.Which is the smallest: 0.7, 0.012, 0.78, 0.665? (a) 0.7 (b) 0.012 (c) 0.78 (d) 0.665
  3. 3.Which is the greatest: 0.6, 0.66, 0.092, 0.597? (a) 0.6 (b) 0.66 (c) 0.092 (d) 0.597
  4. 4.Which is the greatest: 0.148, 0.044, 0.2, 0.24? (a) 0.148 (b) 0.044 (c) 0.2 (d) 0.24
  5. 5.6.95 + 3.9 = ? (a) 10.75 (b) 10.95 (c) 10.85 (d) 7.34
  6. 6.Which is the smallest: 0.446, 0.5, 0.074, 0.58? (a) 0.446 (b) 0.5 (c) 0.074 (d) 0.58
  7. 7.Which is the smallest: 0.312, 0.4, 0.45, 0.015? (a) 0.312 (b) 0.4 (c) 0.45 (d) 0.015
  8. 8.Which is the smallest: 0.129, 0.017, 0.27, 0.2? (a) 0.129 (b) 0.017 (c) 0.27 (d) 0.2
  9. 9.What is the value of the digit 8 in 94.638? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  10. 10.Which is the greatest: 0.7, 0.699, 0.78, 0.065? (a) 0.7 (b) 0.699 (c) 0.78 (d) 0.065
  11. 11.5.31 + 1.3 = ? (a) 6.71 (b) 6.61 (c) 5.44 (d) 6.51
  12. 12.4.31 + 6.2 = ? (a) 10.61 (b) 4.93 (c) 10.51 (d) 10.41
  13. 13.What is the value of the digit 8 in 82.469? (a) 8 (b) 0.08 (c) 80 (d) 0.8
  14. 14.Which is the smallest: 0.099, 0.294, 0.3, 0.39? (a) 0.099 (b) 0.294 (c) 0.3 (d) 0.39
  15. 15.What is the value of the digit 3 in 23.184? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  16. 16.3.25 + 7.1 = ? (a) 10.25 (b) 10.45 (c) 3.96 (d) 10.35
  17. 17.What is the value of the digit 6 in 57.946? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  18. 18.What is the value of the digit 9 in 63.289? (a) 0.9 (b) 0.09 (c) 0.009 (d) 9
  19. 19.6.71 + 3.2 = ? (a) 10.01 (b) 7.03 (c) 9.81 (d) 9.91
  20. 20.2.47 + 1.7 = ? (a) 2.64 (b) 4.27 (c) 4.07 (d) 4.17
  21. 21.1.66 + 7.8 = ? (a) 2.44 (b) 9.36 (c) 9.46 (d) 9.56
  22. 22.Which is the greatest: 0.3, 0.293, 0.035, 0.33? (a) 0.3 (b) 0.293 (c) 0.035 (d) 0.33
  23. 23.Which is the smallest: 0.6, 0.68, 0.046, 0.561? (a) 0.6 (b) 0.68 (c) 0.046 (d) 0.561
  24. 24.Which is the greatest: 0.82, 0.091, 0.753, 0.8? (a) 0.82 (b) 0.091 (c) 0.753 (d) 0.8
  25. 25.4.21 + 8.3 = ? (a) 12.51 (b) 12.61 (c) 5.04 (d) 12.41
  26. 26.2.05 + 5.9 = ? (a) 7.95 (b) 2.64 (c) 7.85 (d) 8.05
  27. 27.1.14 + 3.4 = ? (a) 4.54 (b) 4.44 (c) 1.48 (d) 4.64
  28. 28.7.82 + 4.9 = ? (a) 12.72 (b) 12.82 (c) 12.62 (d) 8.31
  29. 29.Which is the greatest: 0.029, 0.6, 0.583, 0.63? (a) 0.029 (b) 0.6 (c) 0.583 (d) 0.63
  30. 30.7.75 + 9.3 = ? (a) 16.95 (b) 17.05 (c) 8.68 (d) 17.15
  31. 31.What is the value of the digit 2 in 92.536? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  32. 32.2.54 + 3.4 = ? (a) 5.84 (b) 2.88 (c) 6.04 (d) 5.94
  33. 33.Which is the greatest: 0.042, 0.532, 0.6, 0.66? (a) 0.042 (b) 0.532 (c) 0.6 (d) 0.66
  34. 34.Which is the greatest: 0.58, 0.5, 0.042, 0.489? (a) 0.58 (b) 0.5 (c) 0.042 (d) 0.489
  35. 35.What is the value of the digit 8 in 58.924? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  36. 36.What is the value of the digit 4 in 82.534? (a) 4 (b) 0.004 (c) 0.4 (d) 0.04
  37. 37.Which is the smallest: 0.6, 0.586, 0.083, 0.61? (a) 0.6 (b) 0.586 (c) 0.083 (d) 0.61
  38. 38.4.37 + 8.1 = ? (a) 12.57 (b) 5.18 (c) 12.47 (d) 12.37
  39. 39.Which is the smallest: 0.2, 0.26, 0.039, 0.173? (a) 0.2 (b) 0.26 (c) 0.039 (d) 0.173
  40. 40.7.71 + 3.1 = ? (a) 10.91 (b) 10.71 (c) 8.02 (d) 10.81

Answer key

  1. 0.38
  2. 0.012
  3. 0.66
  4. 0.24
  5. 10.85
  6. 0.074
  7. 0.015
  8. 0.017
  9. 0.008
  10. 0.78
  11. 6.61
  12. 10.51
  13. 80
  14. 0.099
  15. 3
  16. 10.35
  17. 0.006
  18. 0.009
  19. 9.91
  20. 4.17
  21. 9.46
  22. 0.33
  23. 0.046
  24. 0.82
  25. 12.51
  26. 7.95
  27. 4.54
  28. 12.72
  29. 0.63
  30. 17.05
  31. 2
  32. 5.94
  33. 0.66
  34. 0.58
  35. 8
  36. 0.004
  37. 0.083
  38. 12.47
  39. 0.039
  40. 10.81

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