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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 427 · 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: 0.26, 0.2, 0.111, 0.032? (a) 0.26 (b) 0.2 (c) 0.111 (d) 0.032
  2. 2.Which is the smallest: 0.112, 0.063, 0.2, 0.23? (a) 0.112 (b) 0.063 (c) 0.2 (d) 0.23
  3. 3.Which is the greatest: 0.3, 0.091, 0.35, 0.236? (a) 0.3 (b) 0.091 (c) 0.35 (d) 0.236
  4. 4.7.73 + 8.5 = ? (a) 16.33 (b) 16.13 (c) 8.58 (d) 16.23
  5. 5.4.21 + 4.2 = ? (a) 8.31 (b) 4.63 (c) 8.41 (d) 8.51
  6. 6.3.54 + 1.6 = ? (a) 5.24 (b) 5.04 (c) 5.14 (d) 3.7
  7. 7.1.97 + 3.9 = ? (a) 5.77 (b) 2.36 (c) 5.87 (d) 5.97
  8. 8.8.67 + 9.4 = ? (a) 18.07 (b) 9.61 (c) 17.97 (d) 18.17
  9. 9.2.11 + 7.5 = ? (a) 9.71 (b) 9.61 (c) 2.86 (d) 9.51
  10. 10.Which is the greatest: 0.328, 0.019, 0.43, 0.4? (a) 0.328 (b) 0.019 (c) 0.43 (d) 0.4
  11. 11.What is the value of the digit 4 in 87.346? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  12. 12.Which is the smallest: 0.2, 0.24, 0.042, 0.159? (a) 0.2 (b) 0.24 (c) 0.042 (d) 0.159
  13. 13.Which is the greatest: 0.222, 0.3, 0.042, 0.37? (a) 0.222 (b) 0.3 (c) 0.042 (d) 0.37
  14. 14.1.66 + 5.9 = ? (a) 7.66 (b) 2.25 (c) 7.56 (d) 7.46
  15. 15.1.17 + 1.9 = ? (a) 2.97 (b) 3.07 (c) 3.17 (d) 1.36
  16. 16.Which is the greatest: 0.64, 0.036, 0.583, 0.6? (a) 0.64 (b) 0.036 (c) 0.583 (d) 0.6
  17. 17.9.37 + 6.5 = ? (a) 15.77 (b) 15.97 (c) 10.02 (d) 15.87
  18. 18.Which is the smallest: 0.093, 0.62, 0.572, 0.6? (a) 0.093 (b) 0.62 (c) 0.572 (d) 0.6
  19. 19.What is the value of the digit 1 in 94.831? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  20. 20.Which is the smallest: 0.036, 0.82, 0.743, 0.8? (a) 0.036 (b) 0.82 (c) 0.743 (d) 0.8
  21. 21.1.16 + 7.5 = ? (a) 8.76 (b) 8.66 (c) 8.56 (d) 1.91
  22. 22.What is the value of the digit 7 in 46.927? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  23. 23.6.86 + 1.7 = ? (a) 7.03 (b) 8.56 (c) 8.66 (d) 8.46
  24. 24.7.36 + 1.8 = ? (a) 9.26 (b) 7.54 (c) 9.06 (d) 9.16
  25. 25.What is the value of the digit 4 in 74.152? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  26. 26.Which is the greatest: 0.21, 0.026, 0.2, 0.135? (a) 0.21 (b) 0.026 (c) 0.2 (d) 0.135
  27. 27.Which is the greatest: 0.3, 0.252, 0.094, 0.32? (a) 0.3 (b) 0.252 (c) 0.094 (d) 0.32
  28. 28.8.92 + 4.1 = ? (a) 9.33 (b) 12.92 (c) 13.12 (d) 13.02
  29. 29.What is the value of the digit 2 in 32.941? (a) 2 (b) 0.02 (c) 20 (d) 0.2
  30. 30.4.98 + 9.4 = ? (a) 5.92 (b) 14.38 (c) 14.48 (d) 14.28
  31. 31.Which is the greatest: 0.37, 0.059, 0.254, 0.3? (a) 0.37 (b) 0.059 (c) 0.254 (d) 0.3
  32. 32.Which is the greatest: 0.542, 0.63, 0.6, 0.068? (a) 0.542 (b) 0.63 (c) 0.6 (d) 0.068
  33. 33.8.71 + 4.1 = ? (a) 12.71 (b) 9.12 (c) 12.91 (d) 12.81
  34. 34.5.63 + 5.3 = ? (a) 6.16 (b) 10.83 (c) 11.03 (d) 10.93
  35. 35.2.51 + 4.3 = ? (a) 2.94 (b) 6.91 (c) 6.81 (d) 6.71
  36. 36.7.88 + 3.1 = ? (a) 10.88 (b) 11.08 (c) 8.19 (d) 10.98
  37. 37.What is the value of the digit 8 in 69.485? (a) 0.008 (b) 0.8 (c) 0.08 (d) 8
  38. 38.3.51 + 9.1 = ? (a) 12.51 (b) 12.71 (c) 4.42 (d) 12.61
  39. 39.What is the value of the digit 4 in 35.974? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  40. 40.1.54 + 6.6 = ? (a) 2.2 (b) 8.04 (c) 8.24 (d) 8.14

Answer key

  1. 0.26
  2. 0.063
  3. 0.35
  4. 16.23
  5. 8.41
  6. 5.14
  7. 5.87
  8. 18.07
  9. 9.61
  10. 0.43
  11. 0.04
  12. 0.042
  13. 0.37
  14. 7.56
  15. 3.07
  16. 0.64
  17. 15.87
  18. 0.093
  19. 0.001
  20. 0.036
  21. 8.66
  22. 0.007
  23. 8.56
  24. 9.16
  25. 4
  26. 0.21
  27. 0.32
  28. 13.02
  29. 2
  30. 14.38
  31. 0.37
  32. 0.63
  33. 12.81
  34. 10.93
  35. 6.81
  36. 10.98
  37. 0.08
  38. 12.61
  39. 0.004
  40. 8.14

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