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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 5 · 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. 1.4.06 + 2.4 = ? (a) 6.46 (b) 6.36 (c) 4.3 (d) 6.56
  2. 2.What is the value of the digit 7 in 68.971? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  3. 3.3.96 + 4.2 = ? (a) 8.26 (b) 8.16 (c) 4.38 (d) 8.06
  4. 4.What is the value of the digit 1 in 57.194? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  5. 5.3.67 + 5.5 = ? (a) 4.22 (b) 9.27 (c) 9.17 (d) 9.07
  6. 6.What is the value of the digit 8 in 89.451? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  7. 7.Which is the smallest: 0.6, 0.538, 0.69, 0.029? (a) 0.6 (b) 0.538 (c) 0.69 (d) 0.029
  8. 8.8.18 + 1.3 = ? (a) 9.48 (b) 8.31 (c) 9.38 (d) 9.58
  9. 9.2.03 + 5.4 = ? (a) 7.53 (b) 2.57 (c) 7.43 (d) 7.33
  10. 10.5.47 + 9.1 = ? (a) 14.57 (b) 14.67 (c) 14.47 (d) 6.38
  11. 11.Which is the smallest: 0.167, 0.28, 0.017, 0.2? (a) 0.167 (b) 0.28 (c) 0.017 (d) 0.2
  12. 12.5.63 + 8.6 = ? (a) 6.49 (b) 14.23 (c) 14.33 (d) 14.13
  13. 13.What is the value of the digit 4 in 51.498? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  14. 14.What is the value of the digit 3 in 82.934? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  15. 15.1.11 + 1.5 = ? (a) 2.51 (b) 2.61 (c) 1.26 (d) 2.71
  16. 16.What is the value of the digit 8 in 72.648? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  17. 17.9.34 + 7.8 = ? (a) 17.14 (b) 17.04 (c) 10.12 (d) 17.24
  18. 18.6.63 + 7.7 = ? (a) 7.4 (b) 14.33 (c) 14.23 (d) 14.43
  19. 19.Which is the smallest: 0.062, 0.464, 0.58, 0.5? (a) 0.062 (b) 0.464 (c) 0.58 (d) 0.5
  20. 20.8.26 + 3.7 = ? (a) 11.86 (b) 11.96 (c) 8.63 (d) 12.06
  21. 21.Which is the smallest: 0.2, 0.031, 0.22, 0.139? (a) 0.2 (b) 0.031 (c) 0.22 (d) 0.139
  22. 22.What is the value of the digit 3 in 14.375? (a) 0.003 (b) 0.3 (c) 0.03 (d) 3
  23. 23.7.23 + 7.7 = ? (a) 14.83 (b) 15.03 (c) 8 (d) 14.93
  24. 24.What is the value of the digit 6 in 27.496? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  25. 25.1.41 + 8.2 = ? (a) 9.61 (b) 2.23 (c) 9.71 (d) 9.51
  26. 26.9.06 + 6.1 = ? (a) 15.06 (b) 15.16 (c) 15.26 (d) 9.67
  27. 27.5.93 + 3.8 = ? (a) 9.63 (b) 9.83 (c) 9.73 (d) 6.31
  28. 28.Which is the greatest: 0.493, 0.56, 0.081, 0.5? (a) 0.493 (b) 0.56 (c) 0.081 (d) 0.5
  29. 29.3.47 + 7.7 = ? (a) 11.27 (b) 4.24 (c) 11.07 (d) 11.17
  30. 30.Which is the greatest: 0.7, 0.091, 0.72, 0.632? (a) 0.7 (b) 0.091 (c) 0.72 (d) 0.632
  31. 31.3.85 + 3.6 = ? (a) 4.21 (b) 7.35 (c) 7.55 (d) 7.45
  32. 32.What is the value of the digit 1 in 46.531? (a) 0.001 (b) 0.1 (c) 0.01 (d) 1
  33. 33.Which is the smallest: 0.2, 0.044, 0.141, 0.21? (a) 0.2 (b) 0.044 (c) 0.141 (d) 0.21
  34. 34.5.94 + 2.9 = ? (a) 8.74 (b) 8.84 (c) 8.94 (d) 6.23
  35. 35.3.51 + 8.3 = ? (a) 4.34 (b) 11.81 (c) 11.71 (d) 11.91
  36. 36.Which is the smallest: 0.292, 0.34, 0.051, 0.3? (a) 0.292 (b) 0.34 (c) 0.051 (d) 0.3
  37. 37.4.65 + 2.6 = ? (a) 4.91 (b) 7.35 (c) 7.15 (d) 7.25
  38. 38.6.35 + 8.1 = ? (a) 14.55 (b) 14.45 (c) 14.35 (d) 7.16
  39. 39.2.68 + 1.6 = ? (a) 4.18 (b) 4.28 (c) 2.84 (d) 4.38
  40. 40.Which is the smallest: 0.4, 0.013, 0.46, 0.371? (a) 0.4 (b) 0.013 (c) 0.46 (d) 0.371

Answer key

  1. 6.46
  2. 0.07
  3. 8.16
  4. 0.1
  5. 9.17
  6. 80
  7. 0.029
  8. 9.48
  9. 7.43
  10. 14.57
  11. 0.017
  12. 14.23
  13. 0.4
  14. 0.03
  15. 2.61
  16. 0.008
  17. 17.14
  18. 14.33
  19. 0.062
  20. 11.96
  21. 0.031
  22. 0.3
  23. 14.93
  24. 0.006
  25. 9.61
  26. 15.16
  27. 9.73
  28. 0.56
  29. 11.17
  30. 0.72
  31. 7.45
  32. 0.001
  33. 0.044
  34. 8.84
  35. 11.81
  36. 0.051
  37. 7.25
  38. 14.45
  39. 4.28
  40. 0.013

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