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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 669 · 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. 1.7.11 + 8.4 = ? (a) 7.95 (b) 15.51 (c) 15.61 (d) 15.41
  2. 2.1.94 + 7.2 = ? (a) 9.04 (b) 9.24 (c) 9.14 (d) 2.66
  3. 3.What is the value of the digit 2 in 83.726? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  4. 4.What is the value of the digit 6 in 12.645? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  5. 5.What is the value of the digit 5 in 65.287? (a) 0.05 (b) 50 (c) 5 (d) 0.5
  6. 6.What is the value of the digit 2 in 31.752? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  7. 7.Which is the greatest: 0.7, 0.73, 0.625, 0.016? (a) 0.7 (b) 0.73 (c) 0.625 (d) 0.016
  8. 8.8.11 + 2.1 = ? (a) 10.11 (b) 8.32 (c) 10.31 (d) 10.21
  9. 9.Which is the greatest: 0.5, 0.471, 0.55, 0.044? (a) 0.5 (b) 0.471 (c) 0.55 (d) 0.044
  10. 10.5.52 + 4.1 = ? (a) 5.93 (b) 9.62 (c) 9.72 (d) 9.52
  11. 11.What is the value of the digit 8 in 36.928? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  12. 12.3.08 + 2.1 = ? (a) 5.28 (b) 5.08 (c) 5.18 (d) 3.29
  13. 13.4.41 + 8.9 = ? (a) 13.21 (b) 13.41 (c) 5.3 (d) 13.31
  14. 14.Which is the smallest: 0.114, 0.089, 0.2, 0.26? (a) 0.114 (b) 0.089 (c) 0.2 (d) 0.26
  15. 15.Which is the greatest: 0.221, 0.37, 0.3, 0.023? (a) 0.221 (b) 0.37 (c) 0.3 (d) 0.023
  16. 16.Which is the greatest: 0.224, 0.3, 0.074, 0.33? (a) 0.224 (b) 0.3 (c) 0.074 (d) 0.33
  17. 17.Which is the smallest: 0.432, 0.5, 0.042, 0.51? (a) 0.432 (b) 0.5 (c) 0.042 (d) 0.51
  18. 18.Which is the greatest: 0.7, 0.641, 0.032, 0.73? (a) 0.7 (b) 0.641 (c) 0.032 (d) 0.73
  19. 19.Which is the greatest: 0.424, 0.59, 0.5, 0.051? (a) 0.424 (b) 0.59 (c) 0.5 (d) 0.051
  20. 20.6.12 + 8.7 = ? (a) 6.99 (b) 14.82 (c) 14.92 (d) 14.72
  21. 21.Which is the greatest: 0.122, 0.28, 0.046, 0.2? (a) 0.122 (b) 0.28 (c) 0.046 (d) 0.2
  22. 22.3.54 + 6.1 = ? (a) 9.54 (b) 4.15 (c) 9.74 (d) 9.64
  23. 23.Which is the smallest: 0.6, 0.512, 0.61, 0.062? (a) 0.6 (b) 0.512 (c) 0.61 (d) 0.062
  24. 24.What is the value of the digit 7 in 36.872? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  25. 25.What is the value of the digit 9 in 65.921? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  26. 26.4.43 + 8.9 = ? (a) 5.32 (b) 13.43 (c) 13.33 (d) 13.23
  27. 27.9.11 + 5.1 = ? (a) 14.11 (b) 14.31 (c) 9.62 (d) 14.21
  28. 28.What is the value of the digit 7 in 13.472? (a) 0.007 (b) 7 (c) 0.07 (d) 0.7
  29. 29.Which is the greatest: 0.156, 0.24, 0.097, 0.2? (a) 0.156 (b) 0.24 (c) 0.097 (d) 0.2
  30. 30.7.01 + 2.2 = ? (a) 9.21 (b) 9.11 (c) 9.31 (d) 7.23
  31. 31.5.34 + 6.1 = ? (a) 11.34 (b) 11.44 (c) 5.95 (d) 11.54
  32. 32.8.37 + 9.4 = ? (a) 17.87 (b) 17.67 (c) 17.77 (d) 9.31
  33. 33.Which is the smallest: 0.6, 0.65, 0.538, 0.085? (a) 0.6 (b) 0.65 (c) 0.538 (d) 0.085
  34. 34.1.16 + 1.3 = ? (a) 2.46 (b) 2.56 (c) 1.29 (d) 2.36
  35. 35.Which is the smallest: 0.73, 0.617, 0.7, 0.051? (a) 0.73 (b) 0.617 (c) 0.7 (d) 0.051
  36. 36.What is the value of the digit 7 in 47.985? (a) 70 (b) 7 (c) 0.07 (d) 0.7
  37. 37.7.27 + 9.2 = ? (a) 16.37 (b) 16.57 (c) 16.47 (d) 8.19
  38. 38.What is the value of the digit 6 in 67.581? (a) 0.6 (b) 60 (c) 6 (d) 0.06
  39. 39.9.44 + 1.2 = ? (a) 9.56 (b) 10.74 (c) 10.64 (d) 10.54
  40. 40.What is the value of the digit 9 in 52.194? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09

Answer key

  1. 15.51
  2. 9.14
  3. 0.02
  4. 0.6
  5. 5
  6. 0.002
  7. 0.73
  8. 10.21
  9. 0.55
  10. 9.62
  11. 0.008
  12. 5.18
  13. 13.31
  14. 0.089
  15. 0.37
  16. 0.33
  17. 0.042
  18. 0.73
  19. 0.59
  20. 14.82
  21. 0.28
  22. 9.64
  23. 0.062
  24. 0.07
  25. 0.9
  26. 13.33
  27. 14.21
  28. 0.07
  29. 0.24
  30. 9.21
  31. 11.44
  32. 17.77
  33. 0.085
  34. 2.46
  35. 0.051
  36. 7
  37. 16.47
  38. 60
  39. 10.64
  40. 0.09

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