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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 572 · 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. 1.1.33 + 9.1 = ? (a) 2.24 (b) 10.33 (c) 10.43 (d) 10.53
  2. 2.1.47 + 7.8 = ? (a) 2.25 (b) 9.37 (c) 9.27 (d) 9.17
  3. 3.Which is the smallest: 0.6, 0.072, 0.62, 0.551? (a) 0.6 (b) 0.072 (c) 0.62 (d) 0.551
  4. 4.What is the value of the digit 4 in 34.178? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  5. 5.5.37 + 7.6 = ? (a) 13.07 (b) 12.87 (c) 6.13 (d) 12.97
  6. 6.What is the value of the digit 1 in 82.415? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  7. 7.1.95 + 7.2 = ? (a) 9.05 (b) 9.15 (c) 9.25 (d) 2.67
  8. 8.What is the value of the digit 8 in 18.524? (a) 0.8 (b) 80 (c) 8 (d) 0.08
  9. 9.3.81 + 8.4 = ? (a) 4.65 (b) 12.31 (c) 12.11 (d) 12.21
  10. 10.1.94 + 9.2 = ? (a) 2.86 (b) 11.14 (c) 11.04 (d) 11.24
  11. 11.What is the value of the digit 8 in 81.234? (a) 0.08 (b) 8 (c) 0.8 (d) 80
  12. 12.3.36 + 1.4 = ? (a) 3.5 (b) 4.66 (c) 4.76 (d) 4.86
  13. 13.What is the value of the digit 5 in 81.375? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  14. 14.2.24 + 1.2 = ? (a) 3.34 (b) 2.36 (c) 3.54 (d) 3.44
  15. 15.7.36 + 5.1 = ? (a) 7.87 (b) 12.56 (c) 12.46 (d) 12.36
  16. 16.Which is the greatest: 0.571, 0.62, 0.031, 0.6? (a) 0.571 (b) 0.62 (c) 0.031 (d) 0.6
  17. 17.2.71 + 8.1 = ? (a) 3.52 (b) 10.71 (c) 10.91 (d) 10.81
  18. 18.What is the value of the digit 8 in 26.958? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  19. 19.Which is the smallest: 0.2, 0.21, 0.168, 0.014? (a) 0.2 (b) 0.21 (c) 0.168 (d) 0.014
  20. 20.Which is the greatest: 0.766, 0.087, 0.8, 0.82? (a) 0.766 (b) 0.087 (c) 0.8 (d) 0.82
  21. 21.3.16 + 2.1 = ? (a) 3.37 (b) 5.36 (c) 5.16 (d) 5.26
  22. 22.What is the value of the digit 5 in 51.297? (a) 5 (b) 0.05 (c) 0.5 (d) 50
  23. 23.8.23 + 4.1 = ? (a) 8.64 (b) 12.33 (c) 12.43 (d) 12.23
  24. 24.3.53 + 6.1 = ? (a) 9.53 (b) 4.14 (c) 9.63 (d) 9.73
  25. 25.Which is the greatest: 0.51, 0.063, 0.426, 0.5? (a) 0.51 (b) 0.063 (c) 0.426 (d) 0.5
  26. 26.5.11 + 8.1 = ? (a) 13.21 (b) 5.92 (c) 13.31 (d) 13.11
  27. 27.Which is the smallest: 0.238, 0.32, 0.037, 0.3? (a) 0.238 (b) 0.32 (c) 0.037 (d) 0.3
  28. 28.9.66 + 9.8 = ? (a) 19.56 (b) 19.36 (c) 10.64 (d) 19.46
  29. 29.7.67 + 4.2 = ? (a) 8.09 (b) 11.77 (c) 11.87 (d) 11.97
  30. 30.What is the value of the digit 6 in 19.765? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  31. 31.5.99 + 2.3 = ? (a) 6.22 (b) 8.19 (c) 8.29 (d) 8.39
  32. 32.Which is the greatest: 0.029, 0.55, 0.497, 0.5? (a) 0.029 (b) 0.55 (c) 0.497 (d) 0.5
  33. 33.What is the value of the digit 6 in 23.846? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  34. 34.4.89 + 2.7 = ? (a) 5.16 (b) 7.69 (c) 7.49 (d) 7.59
  35. 35.Which is the greatest: 0.096, 0.2, 0.25, 0.123? (a) 0.096 (b) 0.2 (c) 0.25 (d) 0.123
  36. 36.4.65 + 2.2 = ? (a) 6.75 (b) 6.85 (c) 6.95 (d) 4.87
  37. 37.5.27 + 5.8 = ? (a) 11.07 (b) 11.17 (c) 5.85 (d) 10.97
  38. 38.Which is the greatest: 0.566, 0.68, 0.6, 0.091? (a) 0.566 (b) 0.68 (c) 0.6 (d) 0.091
  39. 39.Which is the smallest: 0.466, 0.53, 0.088, 0.5? (a) 0.466 (b) 0.53 (c) 0.088 (d) 0.5
  40. 40.Which is the greatest: 0.073, 0.3, 0.217, 0.34? (a) 0.073 (b) 0.3 (c) 0.217 (d) 0.34

Answer key

  1. 10.43
  2. 9.27
  3. 0.072
  4. 4
  5. 12.97
  6. 0.01
  7. 9.15
  8. 8
  9. 12.21
  10. 11.14
  11. 80
  12. 4.76
  13. 0.005
  14. 3.44
  15. 12.46
  16. 0.62
  17. 10.81
  18. 0.008
  19. 0.014
  20. 0.82
  21. 5.26
  22. 50
  23. 12.33
  24. 9.63
  25. 0.51
  26. 13.21
  27. 0.037
  28. 19.46
  29. 11.87
  30. 0.06
  31. 8.29
  32. 0.55
  33. 0.006
  34. 7.59
  35. 0.25
  36. 6.85
  37. 11.07
  38. 0.68
  39. 0.088
  40. 0.34

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