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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 109 · 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.Which is the greatest: 0.369, 0.023, 0.45, 0.4? (a) 0.369 (b) 0.023 (c) 0.45 (d) 0.4
  2. 2.1.91 + 1.2 = ? (a) 3.11 (b) 3.01 (c) 2.03 (d) 3.21
  3. 3.What is the value of the digit 2 in 29.716? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  4. 4.6.05 + 1.8 = ? (a) 7.95 (b) 7.85 (c) 6.23 (d) 7.75
  5. 5.What is the value of the digit 7 in 18.473? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  6. 6.What is the value of the digit 1 in 27.815? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  7. 7.8.23 + 3.2 = ? (a) 11.43 (b) 11.33 (c) 11.53 (d) 8.55
  8. 8.Which is the smallest: 0.8, 0.732, 0.81, 0.054? (a) 0.8 (b) 0.732 (c) 0.81 (d) 0.054
  9. 9.What is the value of the digit 1 in 71.539? (a) 0.01 (b) 1 (c) 10 (d) 0.1
  10. 10.Which is the greatest: 0.281, 0.34, 0.3, 0.012? (a) 0.281 (b) 0.34 (c) 0.3 (d) 0.012
  11. 11.Which is the smallest: 0.587, 0.6, 0.64, 0.015? (a) 0.587 (b) 0.6 (c) 0.64 (d) 0.015
  12. 12.Which is the greatest: 0.5, 0.443, 0.54, 0.079? (a) 0.5 (b) 0.443 (c) 0.54 (d) 0.079
  13. 13.Which is the smallest: 0.6, 0.61, 0.049, 0.516? (a) 0.6 (b) 0.61 (c) 0.049 (d) 0.516
  14. 14.What is the value of the digit 6 in 93.716? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  15. 15.Which is the greatest: 0.332, 0.4, 0.054, 0.41? (a) 0.332 (b) 0.4 (c) 0.054 (d) 0.41
  16. 16.9.59 + 1.9 = ? (a) 9.78 (b) 11.59 (c) 11.49 (d) 11.39
  17. 17.Which is the smallest: 0.327, 0.41, 0.4, 0.072? (a) 0.327 (b) 0.41 (c) 0.4 (d) 0.072
  18. 18.What is the value of the digit 6 in 69.578? (a) 0.06 (b) 60 (c) 6 (d) 0.6
  19. 19.What is the value of the digit 7 in 26.579? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  20. 20.1.89 + 1.9 = ? (a) 3.69 (b) 3.89 (c) 3.79 (d) 2.08
  21. 21.4.22 + 1.1 = ? (a) 5.32 (b) 5.42 (c) 4.33 (d) 5.22
  22. 22.5.14 + 4.2 = ? (a) 5.56 (b) 9.34 (c) 9.24 (d) 9.44
  23. 23.4.64 + 2.1 = ? (a) 6.84 (b) 4.85 (c) 6.74 (d) 6.64
  24. 24.9.97 + 9.2 = ? (a) 10.89 (b) 19.17 (c) 19.27 (d) 19.07
  25. 25.4.72 + 6.7 = ? (a) 11.42 (b) 11.32 (c) 11.52 (d) 5.39
  26. 26.Which is the greatest: 0.4, 0.355, 0.071, 0.42? (a) 0.4 (b) 0.355 (c) 0.071 (d) 0.42
  27. 27.9.93 + 2.7 = ? (a) 12.63 (b) 12.53 (c) 10.2 (d) 12.73
  28. 28.9.44 + 4.8 = ? (a) 14.34 (b) 9.92 (c) 14.14 (d) 14.24
  29. 29.4.03 + 5.4 = ? (a) 4.57 (b) 9.33 (c) 9.53 (d) 9.43
  30. 30.What is the value of the digit 8 in 71.628? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  31. 31.2.33 + 6.7 = ? (a) 9.03 (b) 8.93 (c) 3 (d) 9.13
  32. 32.5.51 + 6.5 = ? (a) 12.11 (b) 12.01 (c) 11.91 (d) 6.16
  33. 33.Which is the greatest: 0.45, 0.343, 0.4, 0.082? (a) 0.45 (b) 0.343 (c) 0.4 (d) 0.082
  34. 34.Which is the greatest: 0.82, 0.8, 0.764, 0.026? (a) 0.82 (b) 0.8 (c) 0.764 (d) 0.026
  35. 35.Which is the greatest: 0.52, 0.448, 0.016, 0.5? (a) 0.52 (b) 0.448 (c) 0.016 (d) 0.5
  36. 36.8.21 + 1.6 = ? (a) 9.91 (b) 9.71 (c) 8.37 (d) 9.81
  37. 37.9.72 + 2.1 = ? (a) 11.72 (b) 11.82 (c) 11.92 (d) 9.93
  38. 38.What is the value of the digit 6 in 23.659? (a) 0.06 (b) 0.6 (c) 6 (d) 0.006
  39. 39.4.09 + 9.8 = ? (a) 13.79 (b) 5.07 (c) 13.99 (d) 13.89
  40. 40.What is the value of the digit 7 in 48.279? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007

Answer key

  1. 0.45
  2. 3.11
  3. 20
  4. 7.85
  5. 0.07
  6. 0.01
  7. 11.43
  8. 0.054
  9. 1
  10. 0.34
  11. 0.015
  12. 0.54
  13. 0.049
  14. 0.006
  15. 0.41
  16. 11.49
  17. 0.072
  18. 60
  19. 0.07
  20. 3.79
  21. 5.32
  22. 9.34
  23. 6.74
  24. 19.17
  25. 11.42
  26. 0.42
  27. 12.63
  28. 14.24
  29. 9.43
  30. 0.008
  31. 9.03
  32. 12.01
  33. 0.45
  34. 0.82
  35. 0.52
  36. 9.81
  37. 11.82
  38. 0.6
  39. 13.89
  40. 0.07

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