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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 790 · 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 smallest: 0.066, 0.152, 0.2, 0.25? (a) 0.066 (b) 0.152 (c) 0.2 (d) 0.25
  2. 2.What is the value of the digit 3 in 49.367? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  3. 3.What is the value of the digit 1 in 62.415? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  4. 4.5.55 + 5.1 = ? (a) 10.55 (b) 6.06 (c) 10.75 (d) 10.65
  5. 5.What is the value of the digit 7 in 73.958? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  6. 6.5.68 + 9.9 = ? (a) 15.68 (b) 6.67 (c) 15.58 (d) 15.48
  7. 7.3.84 + 8.4 = ? (a) 12.34 (b) 12.14 (c) 12.24 (d) 4.68
  8. 8.What is the value of the digit 8 in 82.517? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  9. 9.2.71 + 4.3 = ? (a) 3.14 (b) 7.11 (c) 7.01 (d) 6.91
  10. 10.4.11 + 9.5 = ? (a) 13.71 (b) 13.61 (c) 5.06 (d) 13.51
  11. 11.5.83 + 9.2 = ? (a) 15.13 (b) 15.03 (c) 6.75 (d) 14.93
  12. 12.What is the value of the digit 7 in 76.314? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  13. 13.Which is the smallest: 0.3, 0.022, 0.31, 0.222? (a) 0.3 (b) 0.022 (c) 0.31 (d) 0.222
  14. 14.What is the value of the digit 8 in 83.751? (a) 80 (b) 0.8 (c) 8 (d) 0.08
  15. 15.Which is the smallest: 0.046, 0.35, 0.3, 0.271? (a) 0.046 (b) 0.35 (c) 0.3 (d) 0.271
  16. 16.9.56 + 8.1 = ? (a) 17.76 (b) 10.37 (c) 17.56 (d) 17.66
  17. 17.Which is the greatest: 0.674, 0.7, 0.033, 0.72? (a) 0.674 (b) 0.7 (c) 0.033 (d) 0.72
  18. 18.9.62 + 7.7 = ? (a) 10.39 (b) 17.22 (c) 17.42 (d) 17.32
  19. 19.Which is the smallest: 0.4, 0.011, 0.43, 0.356? (a) 0.4 (b) 0.011 (c) 0.43 (d) 0.356
  20. 20.5.17 + 2.7 = ? (a) 5.44 (b) 7.97 (c) 7.77 (d) 7.87
  21. 21.2.86 + 3.5 = ? (a) 6.26 (b) 6.46 (c) 6.36 (d) 3.21
  22. 22.Which is the smallest: 0.8, 0.066, 0.732, 0.84? (a) 0.8 (b) 0.066 (c) 0.732 (d) 0.84
  23. 23.What is the value of the digit 8 in 18.963? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  24. 24.Which is the greatest: 0.44, 0.312, 0.4, 0.068? (a) 0.44 (b) 0.312 (c) 0.4 (d) 0.068
  25. 25.6.37 + 9.4 = ? (a) 15.87 (b) 15.67 (c) 15.77 (d) 7.31
  26. 26.What is the value of the digit 8 in 68.479? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  27. 27.What is the value of the digit 6 in 83.645? (a) 0.006 (b) 0.06 (c) 0.6 (d) 6
  28. 28.What is the value of the digit 4 in 69.724? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  29. 29.What is the value of the digit 1 in 69.215? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  30. 30.What is the value of the digit 9 in 83.491? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  31. 31.Which is the smallest: 0.619, 0.74, 0.066, 0.7? (a) 0.619 (b) 0.74 (c) 0.066 (d) 0.7
  32. 32.What is the value of the digit 1 in 21.439? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  33. 33.1.21 + 7.6 = ? (a) 8.91 (b) 8.71 (c) 1.97 (d) 8.81
  34. 34.What is the value of the digit 9 in 96.825? (a) 90 (b) 9 (c) 0.9 (d) 0.09
  35. 35.6.87 + 4.9 = ? (a) 11.67 (b) 7.36 (c) 11.77 (d) 11.87
  36. 36.6.63 + 5.5 = ? (a) 12.23 (b) 12.13 (c) 12.03 (d) 7.18
  37. 37.3.59 + 4.5 = ? (a) 4.04 (b) 7.99 (c) 8.09 (d) 8.19
  38. 38.What is the value of the digit 3 in 24.183? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  39. 39.What is the value of the digit 5 in 89.475? (a) 0.5 (b) 0.05 (c) 0.005 (d) 5
  40. 40.7.21 + 9.1 = ? (a) 16.31 (b) 16.21 (c) 8.12 (d) 16.41

Answer key

  1. 0.066
  2. 0.3
  3. 0.01
  4. 10.65
  5. 70
  6. 15.58
  7. 12.24
  8. 80
  9. 7.01
  10. 13.61
  11. 15.03
  12. 70
  13. 0.022
  14. 80
  15. 0.046
  16. 17.66
  17. 0.72
  18. 17.32
  19. 0.011
  20. 7.87
  21. 6.36
  22. 0.066
  23. 8
  24. 0.44
  25. 15.77
  26. 8
  27. 0.6
  28. 0.004
  29. 0.01
  30. 0.09
  31. 0.066
  32. 1
  33. 8.81
  34. 90
  35. 11.77
  36. 12.13
  37. 8.09
  38. 0.003
  39. 0.005
  40. 16.31

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