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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 798 · 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. 1.6.07 + 9.9 = ? (a) 7.06 (b) 15.97 (c) 15.87 (d) 16.07
  2. 2.1.21 + 8.1 = ? (a) 2.02 (b) 9.31 (c) 9.41 (d) 9.21
  3. 3.2.71 + 6.3 = ? (a) 9.01 (b) 8.91 (c) 3.34 (d) 9.11
  4. 4.What is the value of the digit 8 in 27.358? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  5. 5.Which is the smallest: 0.082, 0.4, 0.43, 0.381? (a) 0.082 (b) 0.4 (c) 0.43 (d) 0.381
  6. 6.What is the value of the digit 9 in 48.976? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  7. 7.What is the value of the digit 6 in 76.248? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  8. 8.4.53 + 9.1 = ? (a) 13.63 (b) 13.73 (c) 13.53 (d) 5.44
  9. 9.1.16 + 2.1 = ? (a) 3.36 (b) 1.37 (c) 3.16 (d) 3.26
  10. 10.What is the value of the digit 2 in 92.853? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  11. 11.8.56 + 2.2 = ? (a) 10.76 (b) 8.78 (c) 10.66 (d) 10.86
  12. 12.4.56 + 1.4 = ? (a) 4.7 (b) 6.06 (c) 5.96 (d) 5.86
  13. 13.Which is the greatest: 0.741, 0.86, 0.011, 0.8? (a) 0.741 (b) 0.86 (c) 0.011 (d) 0.8
  14. 14.What is the value of the digit 6 in 82.176? (a) 0.6 (b) 0.006 (c) 6 (d) 0.06
  15. 15.Which is the smallest: 0.8, 0.092, 0.84, 0.742? (a) 0.8 (b) 0.092 (c) 0.84 (d) 0.742
  16. 16.Which is the greatest: 0.323, 0.4, 0.056, 0.41? (a) 0.323 (b) 0.4 (c) 0.056 (d) 0.41
  17. 17.6.15 + 4.1 = ? (a) 10.35 (b) 10.25 (c) 6.56 (d) 10.15
  18. 18.Which is the smallest: 0.075, 0.3, 0.31, 0.275? (a) 0.075 (b) 0.3 (c) 0.31 (d) 0.275
  19. 19.What is the value of the digit 5 in 65.147? (a) 0.5 (b) 5 (c) 0.05 (d) 50
  20. 20.6.38 + 2.2 = ? (a) 6.6 (b) 8.68 (c) 8.48 (d) 8.58
  21. 21.What is the value of the digit 3 in 37.419? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  22. 22.8.41 + 1.4 = ? (a) 9.71 (b) 8.55 (c) 9.81 (d) 9.91
  23. 23.6.44 + 5.6 = ? (a) 11.94 (b) 12.14 (c) 7 (d) 12.04
  24. 24.5.98 + 7.9 = ? (a) 6.77 (b) 13.78 (c) 13.98 (d) 13.88
  25. 25.Which is the greatest: 0.215, 0.099, 0.3, 0.38? (a) 0.215 (b) 0.099 (c) 0.3 (d) 0.38
  26. 26.What is the value of the digit 3 in 83.247? (a) 30 (b) 0.3 (c) 3 (d) 0.03
  27. 27.What is the value of the digit 8 in 28.469? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  28. 28.9.91 + 2.5 = ? (a) 12.41 (b) 10.16 (c) 12.31 (d) 12.51
  29. 29.What is the value of the digit 4 in 43.286? (a) 4 (b) 0.4 (c) 40 (d) 0.04
  30. 30.What is the value of the digit 2 in 24.689? (a) 2 (b) 20 (c) 0.02 (d) 0.2
  31. 31.4.25 + 4.9 = ? (a) 9.05 (b) 4.74 (c) 9.15 (d) 9.25
  32. 32.Which is the smallest: 0.661, 0.027, 0.76, 0.7? (a) 0.661 (b) 0.027 (c) 0.76 (d) 0.7
  33. 33.What is the value of the digit 1 in 26.519? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  34. 34.1.81 + 8.9 = ? (a) 10.81 (b) 2.7 (c) 10.61 (d) 10.71
  35. 35.What is the value of the digit 3 in 61.398? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  36. 36.Which is the greatest: 0.2, 0.074, 0.22, 0.172? (a) 0.2 (b) 0.074 (c) 0.22 (d) 0.172
  37. 37.What is the value of the digit 3 in 42.137? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  38. 38.Which is the greatest: 0.056, 0.86, 0.8, 0.746? (a) 0.056 (b) 0.86 (c) 0.8 (d) 0.746
  39. 39.Which is the smallest: 0.5, 0.52, 0.062, 0.447? (a) 0.5 (b) 0.52 (c) 0.062 (d) 0.447
  40. 40.What is the value of the digit 5 in 76.532? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005

Answer key

  1. 15.97
  2. 9.31
  3. 9.01
  4. 0.008
  5. 0.082
  6. 0.9
  7. 6
  8. 13.63
  9. 3.26
  10. 2
  11. 10.76
  12. 5.96
  13. 0.86
  14. 0.006
  15. 0.092
  16. 0.41
  17. 10.25
  18. 0.075
  19. 5
  20. 8.58
  21. 30
  22. 9.81
  23. 12.04
  24. 13.88
  25. 0.38
  26. 3
  27. 8
  28. 12.41
  29. 40
  30. 20
  31. 9.15
  32. 0.027
  33. 0.01
  34. 10.71
  35. 0.3
  36. 0.22
  37. 0.03
  38. 0.86
  39. 0.062
  40. 0.5

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