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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 354 · 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. 1.5.69 + 1.5 = ? (a) 7.19 (b) 5.84 (c) 7.29 (d) 7.09
  2. 2.What is the value of the digit 4 in 48.217? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  3. 3.4.71 + 7.9 = ? (a) 12.51 (b) 12.71 (c) 12.61 (d) 5.5
  4. 4.What is the value of the digit 2 in 38.426? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  5. 5.What is the value of the digit 8 in 21.853? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  6. 6.1.38 + 5.1 = ? (a) 6.58 (b) 1.89 (c) 6.38 (d) 6.48
  7. 7.Which is the smallest: 0.41, 0.4, 0.321, 0.089? (a) 0.41 (b) 0.4 (c) 0.321 (d) 0.089
  8. 8.Which is the greatest: 0.7, 0.617, 0.073, 0.78? (a) 0.7 (b) 0.617 (c) 0.073 (d) 0.78
  9. 9.Which is the greatest: 0.089, 0.7, 0.74, 0.699? (a) 0.089 (b) 0.7 (c) 0.74 (d) 0.699
  10. 10.What is the value of the digit 8 in 87.169? (a) 0.08 (b) 8 (c) 0.8 (d) 80
  11. 11.Which is the greatest: 0.7, 0.77, 0.625, 0.081? (a) 0.7 (b) 0.77 (c) 0.625 (d) 0.081
  12. 12.4.04 + 1.2 = ? (a) 5.24 (b) 4.16 (c) 5.14 (d) 5.34
  13. 13.What is the value of the digit 1 in 17.486? (a) 10 (b) 1 (c) 0.1 (d) 0.01
  14. 14.Which is the smallest: 0.163, 0.056, 0.22, 0.2? (a) 0.163 (b) 0.056 (c) 0.22 (d) 0.2
  15. 15.What is the value of the digit 8 in 34.682? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  16. 16.5.81 + 4.5 = ? (a) 10.41 (b) 10.21 (c) 6.26 (d) 10.31
  17. 17.What is the value of the digit 1 in 13.698? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  18. 18.Which is the greatest: 0.138, 0.091, 0.2, 0.26? (a) 0.138 (b) 0.091 (c) 0.2 (d) 0.26
  19. 19.What is the value of the digit 5 in 56.271? (a) 5 (b) 50 (c) 0.5 (d) 0.05
  20. 20.What is the value of the digit 8 in 98.417? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  21. 21.What is the value of the digit 9 in 32.956? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  22. 22.1.28 + 1.8 = ? (a) 3.18 (b) 3.08 (c) 2.98 (d) 1.46
  23. 23.1.18 + 1.7 = ? (a) 2.78 (b) 1.35 (c) 2.88 (d) 2.98
  24. 24.What is the value of the digit 4 in 47.265? (a) 0.04 (b) 0.4 (c) 40 (d) 4
  25. 25.4.04 + 6.2 = ? (a) 10.14 (b) 10.34 (c) 10.24 (d) 4.66
  26. 26.Which is the greatest: 0.3, 0.216, 0.34, 0.046? (a) 0.3 (b) 0.216 (c) 0.34 (d) 0.046
  27. 27.1.23 + 9.1 = ? (a) 10.23 (b) 10.43 (c) 2.14 (d) 10.33
  28. 28.9.45 + 7.7 = ? (a) 17.25 (b) 17.15 (c) 17.05 (d) 10.22
  29. 29.1.51 + 5.7 = ? (a) 7.31 (b) 2.08 (c) 7.11 (d) 7.21
  30. 30.7.12 + 7.1 = ? (a) 7.83 (b) 14.22 (c) 14.12 (d) 14.32
  31. 31.What is the value of the digit 2 in 13.269? (a) 0.002 (b) 0.02 (c) 2 (d) 0.2
  32. 32.What is the value of the digit 1 in 92.314? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  33. 33.What is the value of the digit 8 in 79.684? (a) 0.08 (b) 0.008 (c) 0.8 (d) 8
  34. 34.8.47 + 3.1 = ? (a) 11.57 (b) 11.47 (c) 8.78 (d) 11.67
  35. 35.3.22 + 6.9 = ? (a) 10.22 (b) 3.91 (c) 10.12 (d) 10.02
  36. 36.5.01 + 9.1 = ? (a) 14.01 (b) 14.21 (c) 5.92 (d) 14.11
  37. 37.1.35 + 6.5 = ? (a) 2 (b) 7.95 (c) 7.75 (d) 7.85
  38. 38.2.21 + 3.1 = ? (a) 5.21 (b) 5.31 (c) 2.52 (d) 5.41
  39. 39.Which is the smallest: 0.87, 0.015, 0.717, 0.8? (a) 0.87 (b) 0.015 (c) 0.717 (d) 0.8
  40. 40.1.75 + 4.8 = ? (a) 6.65 (b) 6.55 (c) 2.23 (d) 6.45

Answer key

  1. 7.19
  2. 40
  3. 12.61
  4. 0.02
  5. 0.8
  6. 6.48
  7. 0.089
  8. 0.78
  9. 0.74
  10. 80
  11. 0.77
  12. 5.24
  13. 10
  14. 0.056
  15. 0.08
  16. 10.31
  17. 10
  18. 0.26
  19. 50
  20. 8
  21. 0.9
  22. 3.08
  23. 2.88
  24. 40
  25. 10.24
  26. 0.34
  27. 10.33
  28. 17.15
  29. 7.21
  30. 14.22
  31. 0.2
  32. 0.01
  33. 0.08
  34. 11.57
  35. 10.12
  36. 14.11
  37. 7.85
  38. 5.31
  39. 0.015
  40. 6.55

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