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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 983 · 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. 1.2.64 + 9.8 = ? (a) 3.62 (b) 12.34 (c) 12.54 (d) 12.44
  2. 2.What is the value of the digit 5 in 75.412? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  3. 3.Which is the greatest: 0.48, 0.039, 0.336, 0.4? (a) 0.48 (b) 0.039 (c) 0.336 (d) 0.4
  4. 4.7.84 + 9.5 = ? (a) 8.79 (b) 17.24 (c) 17.44 (d) 17.34
  5. 5.What is the value of the digit 1 in 94.135? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  6. 6.5.66 + 1.4 = ? (a) 5.8 (b) 6.96 (c) 7.06 (d) 7.16
  7. 7.4.76 + 4.1 = ? (a) 8.76 (b) 8.86 (c) 5.17 (d) 8.96
  8. 8.9.66 + 5.7 = ? (a) 15.46 (b) 10.23 (c) 15.36 (d) 15.26
  9. 9.Which is the greatest: 0.012, 0.45, 0.4, 0.331? (a) 0.012 (b) 0.45 (c) 0.4 (d) 0.331
  10. 10.What is the value of the digit 5 in 67.359? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  11. 11.6.22 + 5.1 = ? (a) 6.73 (b) 11.22 (c) 11.32 (d) 11.42
  12. 12.9.54 + 4.9 = ? (a) 14.44 (b) 14.54 (c) 14.34 (d) 10.03
  13. 13.1.02 + 4.1 = ? (a) 1.43 (b) 5.22 (c) 5.02 (d) 5.12
  14. 14.What is the value of the digit 3 in 31.287? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  15. 15.7.71 + 5.8 = ? (a) 13.51 (b) 8.29 (c) 13.41 (d) 13.61
  16. 16.What is the value of the digit 3 in 15.243? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  17. 17.5.54 + 5.3 = ? (a) 10.84 (b) 6.07 (c) 10.74 (d) 10.94
  18. 18.Which is the smallest: 0.5, 0.488, 0.072, 0.56? (a) 0.5 (b) 0.488 (c) 0.072 (d) 0.56
  19. 19.What is the value of the digit 7 in 41.735? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  20. 20.What is the value of the digit 2 in 12.865? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  21. 21.3.67 + 4.9 = ? (a) 8.57 (b) 8.47 (c) 8.67 (d) 4.16
  22. 22.9.36 + 3.2 = ? (a) 12.56 (b) 12.46 (c) 12.66 (d) 9.68
  23. 23.What is the value of the digit 5 in 59.823? (a) 50 (b) 0.5 (c) 5 (d) 0.05
  24. 24.What is the value of the digit 5 in 29.453? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  25. 25.What is the value of the digit 4 in 89.214? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  26. 26.Which is the greatest: 0.4, 0.012, 0.46, 0.383? (a) 0.4 (b) 0.012 (c) 0.46 (d) 0.383
  27. 27.2.91 + 6.3 = ? (a) 9.31 (b) 9.21 (c) 9.11 (d) 3.54
  28. 28.Which is the greatest: 0.028, 0.51, 0.5, 0.412? (a) 0.028 (b) 0.51 (c) 0.5 (d) 0.412
  29. 29.What is the value of the digit 2 in 71.592? (a) 2 (b) 0.2 (c) 0.02 (d) 0.002
  30. 30.Which is the smallest: 0.8, 0.86, 0.761, 0.018? (a) 0.8 (b) 0.86 (c) 0.761 (d) 0.018
  31. 31.2.49 + 5.6 = ? (a) 8.19 (b) 3.05 (c) 8.09 (d) 7.99
  32. 32.What is the value of the digit 2 in 75.624? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  33. 33.Which is the smallest: 0.84, 0.748, 0.089, 0.8? (a) 0.84 (b) 0.748 (c) 0.089 (d) 0.8
  34. 34.8.04 + 1.4 = ? (a) 8.18 (b) 9.54 (c) 9.44 (d) 9.34
  35. 35.4.25 + 5.1 = ? (a) 4.76 (b) 9.45 (c) 9.25 (d) 9.35
  36. 36.6.96 + 2.1 = ? (a) 9.06 (b) 8.96 (c) 7.17 (d) 9.16
  37. 37.8.92 + 5.3 = ? (a) 9.45 (b) 14.32 (c) 14.12 (d) 14.22
  38. 38.Which is the smallest: 0.8, 0.88, 0.718, 0.043? (a) 0.8 (b) 0.88 (c) 0.718 (d) 0.043
  39. 39.2.81 + 3.8 = ? (a) 3.19 (b) 6.61 (c) 6.71 (d) 6.51
  40. 40.5.58 + 3.8 = ? (a) 9.38 (b) 9.28 (c) 5.96 (d) 9.48

Answer key

  1. 12.44
  2. 5
  3. 0.48
  4. 17.34
  5. 0.1
  6. 7.06
  7. 8.86
  8. 15.36
  9. 0.45
  10. 0.05
  11. 11.32
  12. 14.44
  13. 5.12
  14. 30
  15. 13.51
  16. 0.003
  17. 10.84
  18. 0.072
  19. 0.7
  20. 2
  21. 8.57
  22. 12.56
  23. 50
  24. 0.05
  25. 0.004
  26. 0.46
  27. 9.21
  28. 0.51
  29. 0.002
  30. 0.018
  31. 8.09
  32. 0.02
  33. 0.089
  34. 9.44
  35. 9.35
  36. 9.06
  37. 14.22
  38. 0.043
  39. 6.61
  40. 9.38

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