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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 500 · 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. 1.1.53 + 3.4 = ? (a) 1.87 (b) 4.83 (c) 4.93 (d) 5.03
  2. 2.What is the value of the digit 8 in 43.681? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  3. 3.What is the value of the digit 1 in 47.591? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  4. 4.Which is the smallest: 0.2, 0.21, 0.018, 0.154? (a) 0.2 (b) 0.21 (c) 0.018 (d) 0.154
  5. 5.What is the value of the digit 4 in 21.874? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  6. 6.What is the value of the digit 1 in 17.953? (a) 10 (b) 0.1 (c) 1 (d) 0.01
  7. 7.What is the value of the digit 7 in 49.567? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  8. 8.Which is the smallest: 0.7, 0.681, 0.022, 0.71? (a) 0.7 (b) 0.681 (c) 0.022 (d) 0.71
  9. 9.What is the value of the digit 5 in 72.895? (a) 0.05 (b) 0.005 (c) 5 (d) 0.5
  10. 10.Which is the smallest: 0.28, 0.051, 0.2, 0.115? (a) 0.28 (b) 0.051 (c) 0.2 (d) 0.115
  11. 11.What is the value of the digit 9 in 18.792? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  12. 12.What is the value of the digit 6 in 64.573? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  13. 13.What is the value of the digit 4 in 97.345? (a) 0.004 (b) 4 (c) 0.04 (d) 0.4
  14. 14.Which is the greatest: 0.014, 0.23, 0.2, 0.152? (a) 0.014 (b) 0.23 (c) 0.2 (d) 0.152
  15. 15.Which is the greatest: 0.22, 0.196, 0.035, 0.2? (a) 0.22 (b) 0.196 (c) 0.035 (d) 0.2
  16. 16.1.58 + 2.9 = ? (a) 1.87 (b) 4.38 (c) 4.58 (d) 4.48
  17. 17.4.57 + 4.4 = ? (a) 8.87 (b) 8.97 (c) 5.01 (d) 9.07
  18. 18.What is the value of the digit 6 in 86.723? (a) 0.6 (b) 60 (c) 6 (d) 0.06
  19. 19.6.48 + 6.4 = ? (a) 12.78 (b) 12.88 (c) 12.98 (d) 7.12
  20. 20.3.71 + 9.1 = ? (a) 12.71 (b) 4.62 (c) 12.91 (d) 12.81
  21. 21.What is the value of the digit 2 in 25.981? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  22. 22.What is the value of the digit 6 in 76.512? (a) 6 (b) 60 (c) 0.6 (d) 0.06
  23. 23.4.52 + 5.6 = ? (a) 10.12 (b) 10.22 (c) 10.02 (d) 5.08
  24. 24.Which is the smallest: 0.126, 0.2, 0.013, 0.22? (a) 0.126 (b) 0.2 (c) 0.013 (d) 0.22
  25. 25.Which is the smallest: 0.7, 0.79, 0.029, 0.634? (a) 0.7 (b) 0.79 (c) 0.029 (d) 0.634
  26. 26.What is the value of the digit 1 in 15.794? (a) 10 (b) 0.1 (c) 1 (d) 0.01
  27. 27.8.02 + 4.7 = ? (a) 12.62 (b) 8.49 (c) 12.72 (d) 12.82
  28. 28.5.51 + 3.7 = ? (a) 9.11 (b) 9.21 (c) 5.88 (d) 9.31
  29. 29.8.49 + 8.1 = ? (a) 9.3 (b) 16.69 (c) 16.59 (d) 16.49
  30. 30.2.86 + 5.2 = ? (a) 3.38 (b) 8.16 (c) 7.96 (d) 8.06
  31. 31.What is the value of the digit 3 in 63.514? (a) 0.3 (b) 30 (c) 3 (d) 0.03
  32. 32.2.39 + 4.1 = ? (a) 2.8 (b) 6.59 (c) 6.39 (d) 6.49
  33. 33.Which is the smallest: 0.48, 0.384, 0.4, 0.042? (a) 0.48 (b) 0.384 (c) 0.4 (d) 0.042
  34. 34.What is the value of the digit 9 in 87.921? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  35. 35.Which is the greatest: 0.036, 0.72, 0.619, 0.7? (a) 0.036 (b) 0.72 (c) 0.619 (d) 0.7
  36. 36.6.51 + 3.7 = ? (a) 10.31 (b) 10.21 (c) 6.88 (d) 10.11
  37. 37.9.97 + 4.1 = ? (a) 14.07 (b) 13.97 (c) 14.17 (d) 10.38
  38. 38.7.14 + 5.1 = ? (a) 7.65 (b) 12.34 (c) 12.14 (d) 12.24
  39. 39.9.76 + 5.1 = ? (a) 14.76 (b) 14.96 (c) 14.86 (d) 10.27
  40. 40.9.61 + 2.6 = ? (a) 12.11 (b) 12.31 (c) 12.21 (d) 9.87

Answer key

  1. 4.93
  2. 0.08
  3. 0.001
  4. 0.018
  5. 0.004
  6. 10
  7. 0.007
  8. 0.022
  9. 0.005
  10. 0.051
  11. 0.09
  12. 60
  13. 0.04
  14. 0.23
  15. 0.22
  16. 4.48
  17. 8.97
  18. 6
  19. 12.88
  20. 12.81
  21. 20
  22. 6
  23. 10.12
  24. 0.013
  25. 0.029
  26. 10
  27. 12.72
  28. 9.21
  29. 16.59
  30. 8.06
  31. 3
  32. 6.49
  33. 0.042
  34. 0.9
  35. 0.72
  36. 10.21
  37. 14.07
  38. 12.24
  39. 14.86
  40. 12.21

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