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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 853 · 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. 1.2.75 + 1.6 = ? (a) 4.25 (b) 2.91 (c) 4.35 (d) 4.45
  2. 2.4.69 + 6.1 = ? (a) 10.89 (b) 5.3 (c) 10.69 (d) 10.79
  3. 3.Which is the smallest: 0.83, 0.712, 0.044, 0.8? (a) 0.83 (b) 0.712 (c) 0.044 (d) 0.8
  4. 4.What is the value of the digit 7 in 74.256? (a) 70 (b) 7 (c) 0.07 (d) 0.7
  5. 5.Which is the smallest: 0.282, 0.34, 0.3, 0.084? (a) 0.282 (b) 0.34 (c) 0.3 (d) 0.084
  6. 6.6.81 + 4.8 = ? (a) 11.51 (b) 11.61 (c) 11.71 (d) 7.29
  7. 7.7.57 + 4.5 = ? (a) 12.17 (b) 11.97 (c) 12.07 (d) 8.02
  8. 8.Which is the greatest: 0.036, 0.512, 0.61, 0.6? (a) 0.036 (b) 0.512 (c) 0.61 (d) 0.6
  9. 9.6.64 + 5.5 = ? (a) 7.19 (b) 12.04 (c) 12.14 (d) 12.24
  10. 10.What is the value of the digit 8 in 28.391? (a) 0.8 (b) 80 (c) 8 (d) 0.08
  11. 11.What is the value of the digit 7 in 37.861? (a) 0.7 (b) 7 (c) 0.07 (d) 70
  12. 12.3.55 + 1.1 = ? (a) 4.55 (b) 4.75 (c) 3.66 (d) 4.65
  13. 13.What is the value of the digit 1 in 17.958? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  14. 14.Which is the greatest: 0.4, 0.47, 0.394, 0.031? (a) 0.4 (b) 0.47 (c) 0.394 (d) 0.031
  15. 15.What is the value of the digit 8 in 23.768? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  16. 16.4.93 + 1.8 = ? (a) 5.11 (b) 6.83 (c) 6.73 (d) 6.63
  17. 17.Which is the greatest: 0.327, 0.46, 0.4, 0.022? (a) 0.327 (b) 0.46 (c) 0.4 (d) 0.022
  18. 18.5.77 + 9.9 = ? (a) 15.77 (b) 15.57 (c) 6.76 (d) 15.67
  19. 19.8.86 + 1.4 = ? (a) 10.16 (b) 10.26 (c) 9 (d) 10.36
  20. 20.Which is the greatest: 0.042, 0.6, 0.62, 0.571? (a) 0.042 (b) 0.6 (c) 0.62 (d) 0.571
  21. 21.Which is the smallest: 0.131, 0.069, 0.27, 0.2? (a) 0.131 (b) 0.069 (c) 0.27 (d) 0.2
  22. 22.3.83 + 6.1 = ? (a) 10.03 (b) 9.93 (c) 9.83 (d) 4.44
  23. 23.Which is the smallest: 0.013, 0.73, 0.692, 0.7? (a) 0.013 (b) 0.73 (c) 0.692 (d) 0.7
  24. 24.Which is the greatest: 0.076, 0.672, 0.79, 0.7? (a) 0.076 (b) 0.672 (c) 0.79 (d) 0.7
  25. 25.What is the value of the digit 1 in 51.836? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  26. 26.Which is the greatest: 0.7, 0.76, 0.059, 0.624? (a) 0.7 (b) 0.76 (c) 0.059 (d) 0.624
  27. 27.Which is the smallest: 0.316, 0.49, 0.4, 0.035? (a) 0.316 (b) 0.49 (c) 0.4 (d) 0.035
  28. 28.What is the value of the digit 4 in 64.829? (a) 0.4 (b) 0.04 (c) 4 (d) 40
  29. 29.Which is the greatest: 0.028, 0.83, 0.8, 0.791? (a) 0.028 (b) 0.83 (c) 0.8 (d) 0.791
  30. 30.What is the value of the digit 2 in 36.291? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  31. 31.What is the value of the digit 1 in 74.518? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  32. 32.What is the value of the digit 2 in 25.983? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  33. 33.What is the value of the digit 4 in 49.185? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  34. 34.5.58 + 8.6 = ? (a) 6.44 (b) 14.28 (c) 14.08 (d) 14.18
  35. 35.What is the value of the digit 9 in 57.913? (a) 0.9 (b) 0.009 (c) 0.09 (d) 9
  36. 36.What is the value of the digit 2 in 26.357? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  37. 37.What is the value of the digit 9 in 53.947? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  38. 38.6.78 + 8.7 = ? (a) 15.38 (b) 7.65 (c) 15.58 (d) 15.48
  39. 39.What is the value of the digit 6 in 79.648? (a) 0.006 (b) 0.6 (c) 6 (d) 0.06
  40. 40.7.46 + 6.9 = ? (a) 14.46 (b) 14.36 (c) 8.15 (d) 14.26

Answer key

  1. 4.35
  2. 10.79
  3. 0.044
  4. 70
  5. 0.084
  6. 11.61
  7. 12.07
  8. 0.61
  9. 12.14
  10. 8
  11. 7
  12. 4.65
  13. 10
  14. 0.47
  15. 0.008
  16. 6.73
  17. 0.46
  18. 15.67
  19. 10.26
  20. 0.62
  21. 0.069
  22. 9.93
  23. 0.013
  24. 0.79
  25. 1
  26. 0.76
  27. 0.035
  28. 4
  29. 0.83
  30. 0.2
  31. 0.01
  32. 20
  33. 40
  34. 14.18
  35. 0.9
  36. 20
  37. 0.9
  38. 15.48
  39. 0.6
  40. 14.36

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