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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 338 · 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. 1.2.41 + 3.1 = ? (a) 2.72 (b) 5.51 (c) 5.61 (d) 5.41
  2. 2.Which is the smallest: 0.463, 0.029, 0.5, 0.51? (a) 0.463 (b) 0.029 (c) 0.5 (d) 0.51
  3. 3.What is the value of the digit 2 in 19.327? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  4. 4.What is the value of the digit 3 in 26.473? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  5. 5.Which is the smallest: 0.61, 0.531, 0.032, 0.6? (a) 0.61 (b) 0.531 (c) 0.032 (d) 0.6
  6. 6.Which is the greatest: 0.256, 0.064, 0.36, 0.3? (a) 0.256 (b) 0.064 (c) 0.36 (d) 0.3
  7. 7.9.87 + 3.7 = ? (a) 10.24 (b) 13.67 (c) 13.57 (d) 13.47
  8. 8.Which is the smallest: 0.4, 0.46, 0.041, 0.364? (a) 0.4 (b) 0.46 (c) 0.041 (d) 0.364
  9. 9.Which is the smallest: 0.012, 0.6, 0.554, 0.64? (a) 0.012 (b) 0.6 (c) 0.554 (d) 0.64
  10. 10.5.51 + 4.8 = ? (a) 10.41 (b) 10.21 (c) 10.31 (d) 5.99
  11. 11.Which is the greatest: 0.28, 0.2, 0.043, 0.114? (a) 0.28 (b) 0.2 (c) 0.043 (d) 0.114
  12. 12.9.54 + 8.9 = ? (a) 18.54 (b) 10.43 (c) 18.34 (d) 18.44
  13. 13.What is the value of the digit 3 in 96.432? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  14. 14.Which is the greatest: 0.051, 0.55, 0.5, 0.454? (a) 0.051 (b) 0.55 (c) 0.5 (d) 0.454
  15. 15.Which is the smallest: 0.3, 0.32, 0.299, 0.067? (a) 0.3 (b) 0.32 (c) 0.299 (d) 0.067
  16. 16.Which is the greatest: 0.144, 0.2, 0.29, 0.047? (a) 0.144 (b) 0.2 (c) 0.29 (d) 0.047
  17. 17.What is the value of the digit 7 in 37.961? (a) 0.7 (b) 70 (c) 7 (d) 0.07
  18. 18.8.07 + 1.8 = ? (a) 8.25 (b) 9.97 (c) 9.77 (d) 9.87
  19. 19.7.96 + 9.6 = ? (a) 17.46 (b) 8.92 (c) 17.66 (d) 17.56
  20. 20.Which is the greatest: 0.65, 0.517, 0.095, 0.6? (a) 0.65 (b) 0.517 (c) 0.095 (d) 0.6
  21. 21.4.51 + 3.6 = ? (a) 8.01 (b) 4.87 (c) 8.11 (d) 8.21
  22. 22.3.24 + 8.7 = ? (a) 11.84 (b) 12.04 (c) 4.11 (d) 11.94
  23. 23.3.53 + 5.7 = ? (a) 9.13 (b) 9.23 (c) 4.1 (d) 9.33
  24. 24.Which is the smallest: 0.364, 0.4, 0.013, 0.49? (a) 0.364 (b) 0.4 (c) 0.013 (d) 0.49
  25. 25.Which is the smallest: 0.216, 0.32, 0.043, 0.3? (a) 0.216 (b) 0.32 (c) 0.043 (d) 0.3
  26. 26.8.66 + 4.1 = ? (a) 12.86 (b) 12.66 (c) 12.76 (d) 9.07
  27. 27.What is the value of the digit 6 in 73.642? (a) 0.006 (b) 0.6 (c) 6 (d) 0.06
  28. 28.3.13 + 3.1 = ? (a) 3.44 (b) 6.23 (c) 6.13 (d) 6.33
  29. 29.7.09 + 2.1 = ? (a) 9.19 (b) 9.09 (c) 7.3 (d) 9.29
  30. 30.Which is the smallest: 0.57, 0.5, 0.053, 0.474? (a) 0.57 (b) 0.5 (c) 0.053 (d) 0.474
  31. 31.9.93 + 9.1 = ? (a) 19.03 (b) 18.93 (c) 19.13 (d) 10.84
  32. 32.Which is the smallest: 0.22, 0.044, 0.2, 0.125? (a) 0.22 (b) 0.044 (c) 0.2 (d) 0.125
  33. 33.8.72 + 3.9 = ? (a) 12.62 (b) 12.52 (c) 9.11 (d) 12.72
  34. 34.What is the value of the digit 9 in 93.582? (a) 0.09 (b) 0.9 (c) 9 (d) 90
  35. 35.9.83 + 2.5 = ? (a) 12.43 (b) 10.08 (c) 12.23 (d) 12.33
  36. 36.9.08 + 1.1 = ? (a) 10.08 (b) 10.18 (c) 10.28 (d) 9.19
  37. 37.What is the value of the digit 2 in 21.579? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  38. 38.Which is the smallest: 0.173, 0.24, 0.2, 0.033? (a) 0.173 (b) 0.24 (c) 0.2 (d) 0.033
  39. 39.Which is the greatest: 0.3, 0.36, 0.069, 0.234? (a) 0.3 (b) 0.36 (c) 0.069 (d) 0.234
  40. 40.Which is the greatest: 0.769, 0.8, 0.88, 0.041? (a) 0.769 (b) 0.8 (c) 0.88 (d) 0.041

Answer key

  1. 5.51
  2. 0.029
  3. 0.02
  4. 0.003
  5. 0.032
  6. 0.36
  7. 13.57
  8. 0.041
  9. 0.012
  10. 10.31
  11. 0.28
  12. 18.44
  13. 0.03
  14. 0.55
  15. 0.067
  16. 0.29
  17. 7
  18. 9.87
  19. 17.56
  20. 0.65
  21. 8.11
  22. 11.94
  23. 9.23
  24. 0.013
  25. 0.043
  26. 12.76
  27. 0.6
  28. 6.23
  29. 9.19
  30. 0.053
  31. 19.03
  32. 0.044
  33. 12.62
  34. 90
  35. 12.33
  36. 10.18
  37. 20
  38. 0.033
  39. 0.36
  40. 0.88

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