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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 385 · 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 3 in 38.912? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  2. 2.3.52 + 2.3 = ? (a) 5.82 (b) 5.92 (c) 5.72 (d) 3.75
  3. 3.2.16 + 8.5 = ? (a) 3.01 (b) 10.76 (c) 10.56 (d) 10.66
  4. 4.What is the value of the digit 1 in 15.968? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  5. 5.1.54 + 7.8 = ? (a) 9.44 (b) 2.32 (c) 9.34 (d) 9.24
  6. 6.What is the value of the digit 2 in 21.538? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  7. 7.4.37 + 1.7 = ? (a) 5.97 (b) 4.54 (c) 6.17 (d) 6.07
  8. 8.5.41 + 6.9 = ? (a) 12.31 (b) 12.41 (c) 6.1 (d) 12.21
  9. 9.What is the value of the digit 1 in 53.471? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  10. 10.What is the value of the digit 6 in 67.345? (a) 0.06 (b) 6 (c) 60 (d) 0.6
  11. 11.2.91 + 8.2 = ? (a) 3.73 (b) 11.21 (c) 11.11 (d) 11.01
  12. 12.What is the value of the digit 3 in 43.695? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  13. 13.8.21 + 9.4 = ? (a) 17.61 (b) 17.51 (c) 17.71 (d) 9.15
  14. 14.What is the value of the digit 5 in 23.465? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  15. 15.Which is the smallest: 0.497, 0.57, 0.5, 0.076? (a) 0.497 (b) 0.57 (c) 0.5 (d) 0.076
  16. 16.Which is the greatest: 0.083, 0.55, 0.493, 0.5? (a) 0.083 (b) 0.55 (c) 0.493 (d) 0.5
  17. 17.Which is the smallest: 0.043, 0.664, 0.7, 0.75? (a) 0.043 (b) 0.664 (c) 0.7 (d) 0.75
  18. 18.3.81 + 4.9 = ? (a) 8.61 (b) 4.3 (c) 8.81 (d) 8.71
  19. 19.Which is the greatest: 0.066, 0.85, 0.8, 0.734? (a) 0.066 (b) 0.85 (c) 0.8 (d) 0.734
  20. 20.Which is the greatest: 0.011, 0.74, 0.7, 0.615? (a) 0.011 (b) 0.74 (c) 0.7 (d) 0.615
  21. 21.What is the value of the digit 3 in 86.137? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  22. 22.2.56 + 8.4 = ? (a) 11.06 (b) 3.4 (c) 10.86 (d) 10.96
  23. 23.What is the value of the digit 3 in 81.236? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  24. 24.3.97 + 4.2 = ? (a) 4.39 (b) 8.07 (c) 8.17 (d) 8.27
  25. 25.Which is the greatest: 0.427, 0.5, 0.098, 0.59? (a) 0.427 (b) 0.5 (c) 0.098 (d) 0.59
  26. 26.What is the value of the digit 1 in 92.613? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  27. 27.5.31 + 1.5 = ? (a) 5.46 (b) 6.71 (c) 6.91 (d) 6.81
  28. 28.Which is the greatest: 0.5, 0.53, 0.441, 0.046? (a) 0.5 (b) 0.53 (c) 0.441 (d) 0.046
  29. 29.3.67 + 5.5 = ? (a) 9.17 (b) 4.22 (c) 9.07 (d) 9.27
  30. 30.7.21 + 2.3 = ? (a) 9.51 (b) 9.61 (c) 9.41 (d) 7.44
  31. 31.4.66 + 2.3 = ? (a) 6.96 (b) 6.86 (c) 7.06 (d) 4.89
  32. 32.Which is the smallest: 0.588, 0.6, 0.033, 0.69? (a) 0.588 (b) 0.6 (c) 0.033 (d) 0.69
  33. 33.Which is the smallest: 0.29, 0.141, 0.018, 0.2? (a) 0.29 (b) 0.141 (c) 0.018 (d) 0.2
  34. 34.Which is the greatest: 0.052, 0.4, 0.386, 0.48? (a) 0.052 (b) 0.4 (c) 0.386 (d) 0.48
  35. 35.What is the value of the digit 4 in 97.514? (a) 0.04 (b) 0.4 (c) 0.004 (d) 4
  36. 36.Which is the smallest: 0.354, 0.46, 0.4, 0.012? (a) 0.354 (b) 0.46 (c) 0.4 (d) 0.012
  37. 37.9.62 + 1.3 = ? (a) 11.02 (b) 10.82 (c) 9.75 (d) 10.92
  38. 38.What is the value of the digit 7 in 14.763? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  39. 39.2.99 + 5.5 = ? (a) 3.54 (b) 8.59 (c) 8.39 (d) 8.49
  40. 40.Which is the smallest: 0.075, 0.52, 0.456, 0.5? (a) 0.075 (b) 0.52 (c) 0.456 (d) 0.5

Answer key

  1. 30
  2. 5.82
  3. 10.66
  4. 10
  5. 9.34
  6. 20
  7. 6.07
  8. 12.31
  9. 0.001
  10. 60
  11. 11.11
  12. 3
  13. 17.61
  14. 0.005
  15. 0.076
  16. 0.55
  17. 0.043
  18. 8.71
  19. 0.85
  20. 0.74
  21. 0.03
  22. 10.96
  23. 0.03
  24. 8.17
  25. 0.59
  26. 0.01
  27. 6.81
  28. 0.53
  29. 9.17
  30. 9.51
  31. 6.96
  32. 0.033
  33. 0.018
  34. 0.48
  35. 0.004
  36. 0.012
  37. 10.92
  38. 0.7
  39. 8.49
  40. 0.075

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