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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 636 · 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. 1.1.09 + 8.1 = ? (a) 9.09 (b) 1.9 (c) 9.29 (d) 9.19
  2. 2.4.57 + 1.1 = ? (a) 5.77 (b) 5.57 (c) 4.68 (d) 5.67
  3. 3.Which is the greatest: 0.74, 0.097, 0.7, 0.635? (a) 0.74 (b) 0.097 (c) 0.7 (d) 0.635
  4. 4.What is the value of the digit 7 in 28.637? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  5. 5.2.88 + 2.3 = ? (a) 5.28 (b) 3.11 (c) 5.18 (d) 5.08
  6. 6.What is the value of the digit 3 in 37.689? (a) 0.03 (b) 3 (c) 0.3 (d) 30
  7. 7.Which is the smallest: 0.278, 0.3, 0.051, 0.36? (a) 0.278 (b) 0.3 (c) 0.051 (d) 0.36
  8. 8.3.35 + 9.2 = ? (a) 12.65 (b) 12.55 (c) 4.27 (d) 12.45
  9. 9.7.49 + 5.9 = ? (a) 13.49 (b) 13.39 (c) 8.08 (d) 13.29
  10. 10.What is the value of the digit 1 in 32.471? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  11. 11.What is the value of the digit 7 in 25.176? (a) 0.007 (b) 0.7 (c) 0.07 (d) 7
  12. 12.Which is the greatest: 0.6, 0.092, 0.576, 0.64? (a) 0.6 (b) 0.092 (c) 0.576 (d) 0.64
  13. 13.8.45 + 8.4 = ? (a) 16.75 (b) 9.29 (c) 16.95 (d) 16.85
  14. 14.Which is the greatest: 0.074, 0.41, 0.4, 0.371? (a) 0.074 (b) 0.41 (c) 0.4 (d) 0.371
  15. 15.6.48 + 9.5 = ? (a) 16.08 (b) 15.98 (c) 7.43 (d) 15.88
  16. 16.Which is the greatest: 0.42, 0.336, 0.4, 0.015? (a) 0.42 (b) 0.336 (c) 0.4 (d) 0.015
  17. 17.What is the value of the digit 5 in 95.621? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  18. 18.What is the value of the digit 2 in 52.431? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  19. 19.9.41 + 1.5 = ? (a) 9.56 (b) 11.01 (c) 10.81 (d) 10.91
  20. 20.6.15 + 2.1 = ? (a) 8.25 (b) 8.15 (c) 8.35 (d) 6.36
  21. 21.What is the value of the digit 3 in 29.173? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  22. 22.Which is the smallest: 0.136, 0.22, 0.034, 0.2? (a) 0.136 (b) 0.22 (c) 0.034 (d) 0.2
  23. 23.What is the value of the digit 3 in 34.729? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  24. 24.Which is the greatest: 0.011, 0.2, 0.191, 0.23? (a) 0.011 (b) 0.2 (c) 0.191 (d) 0.23
  25. 25.Which is the smallest: 0.725, 0.088, 0.84, 0.8? (a) 0.725 (b) 0.088 (c) 0.84 (d) 0.8
  26. 26.What is the value of the digit 8 in 69.482? (a) 0.008 (b) 0.8 (c) 8 (d) 0.08
  27. 27.Which is the smallest: 0.052, 0.766, 0.8, 0.85? (a) 0.052 (b) 0.766 (c) 0.8 (d) 0.85
  28. 28.What is the value of the digit 5 in 59.271? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  29. 29.What is the value of the digit 9 in 89.417? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  30. 30.3.69 + 3.3 = ? (a) 4.02 (b) 6.89 (c) 6.99 (d) 7.09
  31. 31.2.15 + 2.3 = ? (a) 4.45 (b) 2.38 (c) 4.55 (d) 4.35
  32. 32.6.41 + 9.5 = ? (a) 7.36 (b) 15.91 (c) 16.01 (d) 15.81
  33. 33.What is the value of the digit 7 in 74.239? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  34. 34.Which is the smallest: 0.093, 0.322, 0.48, 0.4? (a) 0.093 (b) 0.322 (c) 0.48 (d) 0.4
  35. 35.Which is the greatest: 0.34, 0.285, 0.043, 0.3? (a) 0.34 (b) 0.285 (c) 0.043 (d) 0.3
  36. 36.5.21 + 7.6 = ? (a) 12.91 (b) 5.97 (c) 12.71 (d) 12.81
  37. 37.4.46 + 1.6 = ? (a) 6.16 (b) 4.62 (c) 5.96 (d) 6.06
  38. 38.1.61 + 7.9 = ? (a) 2.4 (b) 9.61 (c) 9.41 (d) 9.51
  39. 39.8.79 + 9.4 = ? (a) 18.09 (b) 9.73 (c) 18.29 (d) 18.19
  40. 40.2.35 + 3.9 = ? (a) 6.15 (b) 6.35 (c) 6.25 (d) 2.74

Answer key

  1. 9.19
  2. 5.67
  3. 0.74
  4. 0.007
  5. 5.18
  6. 30
  7. 0.051
  8. 12.55
  9. 13.39
  10. 0.001
  11. 0.07
  12. 0.64
  13. 16.85
  14. 0.41
  15. 15.98
  16. 0.42
  17. 5
  18. 2
  19. 10.91
  20. 8.25
  21. 0.003
  22. 0.034
  23. 30
  24. 0.23
  25. 0.088
  26. 0.08
  27. 0.052
  28. 50
  29. 9
  30. 6.99
  31. 4.45
  32. 15.91
  33. 70
  34. 0.093
  35. 0.34
  36. 12.81
  37. 6.06
  38. 9.51
  39. 18.19
  40. 6.25

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