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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 887 · 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. 1.8.83 + 4.1 = ? (a) 12.83 (b) 12.93 (c) 9.24 (d) 13.03
  2. 2.9.16 + 5.9 = ? (a) 15.16 (b) 9.75 (c) 15.06 (d) 14.96
  3. 3.1.63 + 7.9 = ? (a) 9.53 (b) 9.43 (c) 2.42 (d) 9.63
  4. 4.What is the value of the digit 7 in 42.731? (a) 0.007 (b) 7 (c) 0.07 (d) 0.7
  5. 5.What is the value of the digit 5 in 43.256? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  6. 6.Which is the greatest: 0.453, 0.058, 0.55, 0.5? (a) 0.453 (b) 0.058 (c) 0.55 (d) 0.5
  7. 7.Which is the smallest: 0.253, 0.044, 0.3, 0.35? (a) 0.253 (b) 0.044 (c) 0.3 (d) 0.35
  8. 8.Which is the greatest: 0.4, 0.391, 0.42, 0.012? (a) 0.4 (b) 0.391 (c) 0.42 (d) 0.012
  9. 9.What is the value of the digit 7 in 36.471? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  10. 10.Which is the greatest: 0.2, 0.21, 0.134, 0.029? (a) 0.2 (b) 0.21 (c) 0.134 (d) 0.029
  11. 11.Which is the greatest: 0.58, 0.422, 0.5, 0.047? (a) 0.58 (b) 0.422 (c) 0.5 (d) 0.047
  12. 12.5.13 + 3.1 = ? (a) 8.13 (b) 8.23 (c) 8.33 (d) 5.44
  13. 13.What is the value of the digit 2 in 72.389? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  14. 14.Which is the smallest: 0.61, 0.037, 0.6, 0.595? (a) 0.61 (b) 0.037 (c) 0.6 (d) 0.595
  15. 15.Which is the smallest: 0.21, 0.115, 0.2, 0.061? (a) 0.21 (b) 0.115 (c) 0.2 (d) 0.061
  16. 16.What is the value of the digit 7 in 31.782? (a) 0.07 (b) 0.7 (c) 0.007 (d) 7
  17. 17.9.13 + 5.2 = ? (a) 14.23 (b) 14.43 (c) 14.33 (d) 9.65
  18. 18.4.44 + 4.1 = ? (a) 8.54 (b) 8.44 (c) 8.64 (d) 4.85
  19. 19.4.59 + 2.1 = ? (a) 6.79 (b) 6.59 (c) 6.69 (d) 4.8
  20. 20.Which is the greatest: 0.722, 0.88, 0.8, 0.089? (a) 0.722 (b) 0.88 (c) 0.8 (d) 0.089
  21. 21.Which is the smallest: 0.2, 0.172, 0.21, 0.032? (a) 0.2 (b) 0.172 (c) 0.21 (d) 0.032
  22. 22.Which is the greatest: 0.6, 0.63, 0.525, 0.017? (a) 0.6 (b) 0.63 (c) 0.525 (d) 0.017
  23. 23.Which is the smallest: 0.692, 0.7, 0.71, 0.014? (a) 0.692 (b) 0.7 (c) 0.71 (d) 0.014
  24. 24.3.74 + 2.3 = ? (a) 3.97 (b) 6.14 (c) 5.94 (d) 6.04
  25. 25.What is the value of the digit 5 in 51.237? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  26. 26.Which is the greatest: 0.771, 0.031, 0.87, 0.8? (a) 0.771 (b) 0.031 (c) 0.87 (d) 0.8
  27. 27.1.28 + 2.4 = ? (a) 3.78 (b) 3.58 (c) 1.52 (d) 3.68
  28. 28.What is the value of the digit 5 in 39.258? (a) 0.5 (b) 0.005 (c) 0.05 (d) 5
  29. 29.6.89 + 7.1 = ? (a) 13.99 (b) 7.6 (c) 13.89 (d) 14.09
  30. 30.What is the value of the digit 1 in 97.312? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  31. 31.6.98 + 5.9 = ? (a) 12.78 (b) 12.88 (c) 12.98 (d) 7.57
  32. 32.3.05 + 2.6 = ? (a) 5.55 (b) 5.75 (c) 3.31 (d) 5.65
  33. 33.Which is the smallest: 0.185, 0.21, 0.081, 0.2? (a) 0.185 (b) 0.21 (c) 0.081 (d) 0.2
  34. 34.4.51 + 6.8 = ? (a) 11.41 (b) 11.21 (c) 5.19 (d) 11.31
  35. 35.3.78 + 5.4 = ? (a) 4.32 (b) 9.18 (c) 9.08 (d) 9.28
  36. 36.Which is the greatest: 0.043, 0.796, 0.86, 0.8? (a) 0.043 (b) 0.796 (c) 0.86 (d) 0.8
  37. 37.What is the value of the digit 6 in 32.678? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  38. 38.1.25 + 7.4 = ? (a) 8.55 (b) 8.65 (c) 1.99 (d) 8.75
  39. 39.3.01 + 9.8 = ? (a) 12.71 (b) 12.91 (c) 3.99 (d) 12.81
  40. 40.2.34 + 8.3 = ? (a) 10.74 (b) 10.54 (c) 10.64 (d) 3.17

Answer key

  1. 12.93
  2. 15.06
  3. 9.53
  4. 0.7
  5. 0.05
  6. 0.55
  7. 0.044
  8. 0.42
  9. 0.07
  10. 0.21
  11. 0.58
  12. 8.23
  13. 2
  14. 0.037
  15. 0.061
  16. 0.7
  17. 14.33
  18. 8.54
  19. 6.69
  20. 0.88
  21. 0.032
  22. 0.63
  23. 0.014
  24. 6.04
  25. 50
  26. 0.87
  27. 3.68
  28. 0.05
  29. 13.99
  30. 0.01
  31. 12.88
  32. 5.65
  33. 0.081
  34. 11.31
  35. 9.18
  36. 0.86
  37. 0.6
  38. 8.65
  39. 12.81
  40. 10.64

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