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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 836 · 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 9 in 59.674? (a) 0.9 (b) 0.09 (c) 90 (d) 9
  2. 2.7.68 + 1.1 = ? (a) 8.68 (b) 8.78 (c) 7.79 (d) 8.88
  3. 3.Which is the greatest: 0.256, 0.35, 0.3, 0.038? (a) 0.256 (b) 0.35 (c) 0.3 (d) 0.038
  4. 4.6.74 + 1.4 = ? (a) 8.24 (b) 6.88 (c) 8.04 (d) 8.14
  5. 5.3.58 + 4.2 = ? (a) 7.78 (b) 4 (c) 7.68 (d) 7.88
  6. 6.What is the value of the digit 1 in 23.719? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  7. 7.6.03 + 1.6 = ? (a) 6.19 (b) 7.73 (c) 7.63 (d) 7.53
  8. 8.4.39 + 2.9 = ? (a) 7.19 (b) 4.68 (c) 7.39 (d) 7.29
  9. 9.6.53 + 1.4 = ? (a) 8.03 (b) 6.67 (c) 7.83 (d) 7.93
  10. 10.8.95 + 5.4 = ? (a) 9.49 (b) 14.45 (c) 14.25 (d) 14.35
  11. 11.7.34 + 5.1 = ? (a) 7.85 (b) 12.44 (c) 12.34 (d) 12.54
  12. 12.What is the value of the digit 3 in 19.723? (a) 3 (b) 0.003 (c) 0.03 (d) 0.3
  13. 13.Which is the smallest: 0.073, 0.644, 0.78, 0.7? (a) 0.073 (b) 0.644 (c) 0.78 (d) 0.7
  14. 14.Which is the greatest: 0.8, 0.031, 0.764, 0.83? (a) 0.8 (b) 0.031 (c) 0.764 (d) 0.83
  15. 15.2.46 + 4.5 = ? (a) 7.06 (b) 6.86 (c) 2.91 (d) 6.96
  16. 16.4.86 + 3.1 = ? (a) 8.06 (b) 7.86 (c) 5.17 (d) 7.96
  17. 17.Which is the smallest: 0.634, 0.79, 0.043, 0.7? (a) 0.634 (b) 0.79 (c) 0.043 (d) 0.7
  18. 18.9.04 + 2.6 = ? (a) 9.3 (b) 11.74 (c) 11.64 (d) 11.54
  19. 19.What is the value of the digit 5 in 56.129? (a) 0.05 (b) 5 (c) 50 (d) 0.5
  20. 20.What is the value of the digit 5 in 86.395? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  21. 21.Which is the greatest: 0.073, 0.26, 0.162, 0.2? (a) 0.073 (b) 0.26 (c) 0.162 (d) 0.2
  22. 22.What is the value of the digit 1 in 85.146? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  23. 23.8.94 + 6.7 = ? (a) 15.64 (b) 15.74 (c) 9.61 (d) 15.54
  24. 24.What is the value of the digit 2 in 42.716? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  25. 25.Which is the smallest: 0.23, 0.031, 0.119, 0.2? (a) 0.23 (b) 0.031 (c) 0.119 (d) 0.2
  26. 26.Which is the smallest: 0.146, 0.2, 0.083, 0.28? (a) 0.146 (b) 0.2 (c) 0.083 (d) 0.28
  27. 27.What is the value of the digit 7 in 87.569? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  28. 28.5.96 + 5.9 = ? (a) 6.55 (b) 11.96 (c) 11.86 (d) 11.76
  29. 29.3.14 + 1.5 = ? (a) 3.29 (b) 4.54 (c) 4.64 (d) 4.74
  30. 30.2.18 + 2.7 = ? (a) 4.88 (b) 4.98 (c) 4.78 (d) 2.45
  31. 31.3.11 + 5.8 = ? (a) 8.81 (b) 9.01 (c) 3.69 (d) 8.91
  32. 32.5.72 + 5.2 = ? (a) 10.92 (b) 10.82 (c) 11.02 (d) 6.24
  33. 33.6.47 + 4.1 = ? (a) 6.88 (b) 10.47 (c) 10.67 (d) 10.57
  34. 34.What is the value of the digit 3 in 93.182? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  35. 35.What is the value of the digit 9 in 65.194? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  36. 36.2.84 + 6.7 = ? (a) 9.44 (b) 9.64 (c) 9.54 (d) 3.51
  37. 37.Which is the greatest: 0.122, 0.099, 0.29, 0.2? (a) 0.122 (b) 0.099 (c) 0.29 (d) 0.2
  38. 38.Which is the smallest: 0.013, 0.634, 0.77, 0.7? (a) 0.013 (b) 0.634 (c) 0.77 (d) 0.7
  39. 39.Which is the smallest: 0.84, 0.082, 0.8, 0.743? (a) 0.84 (b) 0.082 (c) 0.8 (d) 0.743
  40. 40.5.49 + 9.1 = ? (a) 6.4 (b) 14.49 (c) 14.59 (d) 14.69

Answer key

  1. 9
  2. 8.78
  3. 0.35
  4. 8.14
  5. 7.78
  6. 0.01
  7. 7.63
  8. 7.29
  9. 7.93
  10. 14.35
  11. 12.44
  12. 0.003
  13. 0.073
  14. 0.83
  15. 6.96
  16. 7.96
  17. 0.043
  18. 11.64
  19. 50
  20. 0.005
  21. 0.26
  22. 0.1
  23. 15.64
  24. 2
  25. 0.031
  26. 0.083
  27. 7
  28. 11.86
  29. 4.64
  30. 4.88
  31. 8.91
  32. 10.92
  33. 10.57
  34. 3
  35. 0.09
  36. 9.54
  37. 0.29
  38. 0.013
  39. 0.082
  40. 14.59

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