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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 167 · 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.What is the value of the digit 2 in 23.849? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  2. 2.2.34 + 9.7 = ? (a) 11.94 (b) 12.04 (c) 3.31 (d) 12.14
  3. 3.1.19 + 2.6 = ? (a) 1.45 (b) 3.79 (c) 3.89 (d) 3.69
  4. 4.3.76 + 8.5 = ? (a) 12.36 (b) 4.61 (c) 12.16 (d) 12.26
  5. 5.3.92 + 4.5 = ? (a) 8.52 (b) 4.37 (c) 8.42 (d) 8.32
  6. 6.6.57 + 7.5 = ? (a) 7.32 (b) 14.07 (c) 14.17 (d) 13.97
  7. 7.What is the value of the digit 1 in 97.514? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  8. 8.9.78 + 5.3 = ? (a) 14.98 (b) 15.08 (c) 15.18 (d) 10.31
  9. 9.What is the value of the digit 9 in 45.139? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  10. 10.4.83 + 5.1 = ? (a) 5.34 (b) 9.93 (c) 9.83 (d) 10.03
  11. 11.Which is the smallest: 0.241, 0.38, 0.3, 0.062? (a) 0.241 (b) 0.38 (c) 0.3 (d) 0.062
  12. 12.4.56 + 8.2 = ? (a) 12.76 (b) 5.38 (c) 12.86 (d) 12.66
  13. 13.1.71 + 6.4 = ? (a) 8.21 (b) 8.01 (c) 2.35 (d) 8.11
  14. 14.Which is the greatest: 0.36, 0.022, 0.3, 0.297? (a) 0.36 (b) 0.022 (c) 0.3 (d) 0.297
  15. 15.Which is the smallest: 0.159, 0.2, 0.24, 0.082? (a) 0.159 (b) 0.2 (c) 0.24 (d) 0.082
  16. 16.6.03 + 7.6 = ? (a) 6.79 (b) 13.73 (c) 13.53 (d) 13.63
  17. 17.5.66 + 1.6 = ? (a) 7.36 (b) 5.82 (c) 7.16 (d) 7.26
  18. 18.Which is the greatest: 0.015, 0.63, 0.6, 0.521? (a) 0.015 (b) 0.63 (c) 0.6 (d) 0.521
  19. 19.What is the value of the digit 8 in 85.743? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  20. 20.What is the value of the digit 5 in 47.851? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  21. 21.What is the value of the digit 8 in 18.746? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  22. 22.1.85 + 6.6 = ? (a) 8.45 (b) 2.51 (c) 8.35 (d) 8.55
  23. 23.What is the value of the digit 1 in 54.137? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  24. 24.1.58 + 3.7 = ? (a) 1.95 (b) 5.38 (c) 5.18 (d) 5.28
  25. 25.What is the value of the digit 4 in 14.376? (a) 0.04 (b) 0.4 (c) 40 (d) 4
  26. 26.8.23 + 9.9 = ? (a) 9.22 (b) 18.23 (c) 18.13 (d) 18.03
  27. 27.3.95 + 6.7 = ? (a) 10.75 (b) 10.55 (c) 10.65 (d) 4.62
  28. 28.What is the value of the digit 7 in 17.583? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  29. 29.What is the value of the digit 9 in 85.973? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  30. 30.What is the value of the digit 2 in 74.392? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  31. 31.9.04 + 1.6 = ? (a) 10.74 (b) 10.54 (c) 10.64 (d) 9.2
  32. 32.1.28 + 7.1 = ? (a) 8.28 (b) 8.48 (c) 1.99 (d) 8.38
  33. 33.4.53 + 1.9 = ? (a) 6.53 (b) 6.33 (c) 4.72 (d) 6.43
  34. 34.Which is the smallest: 0.3, 0.37, 0.272, 0.082? (a) 0.3 (b) 0.37 (c) 0.272 (d) 0.082
  35. 35.3.51 + 8.5 = ? (a) 4.36 (b) 11.91 (c) 12.01 (d) 12.11
  36. 36.Which is the greatest: 0.61, 0.096, 0.536, 0.6? (a) 0.61 (b) 0.096 (c) 0.536 (d) 0.6
  37. 37.7.81 + 2.8 = ? (a) 10.71 (b) 10.61 (c) 8.09 (d) 10.51
  38. 38.What is the value of the digit 5 in 17.852? (a) 0.5 (b) 0.005 (c) 5 (d) 0.05
  39. 39.What is the value of the digit 7 in 24.758? (a) 0.007 (b) 7 (c) 0.07 (d) 0.7
  40. 40.Which is the smallest: 0.676, 0.7, 0.78, 0.037? (a) 0.676 (b) 0.7 (c) 0.78 (d) 0.037

Answer key

  1. 20
  2. 12.04
  3. 3.79
  4. 12.26
  5. 8.42
  6. 14.07
  7. 0.01
  8. 15.08
  9. 0.009
  10. 9.93
  11. 0.062
  12. 12.76
  13. 8.11
  14. 0.36
  15. 0.082
  16. 13.63
  17. 7.26
  18. 0.63
  19. 80
  20. 0.05
  21. 8
  22. 8.45
  23. 0.1
  24. 5.28
  25. 4
  26. 18.13
  27. 10.65
  28. 7
  29. 0.9
  30. 0.002
  31. 10.64
  32. 8.38
  33. 6.43
  34. 0.082
  35. 12.01
  36. 0.61
  37. 10.61
  38. 0.05
  39. 0.7
  40. 0.037

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