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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 415 · 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.Which is the greatest: 0.052, 0.138, 0.2, 0.27? (a) 0.052 (b) 0.138 (c) 0.2 (d) 0.27
  2. 2.5.57 + 7.1 = ? (a) 12.67 (b) 6.28 (c) 12.57 (d) 12.77
  3. 3.Which is the smallest: 0.4, 0.389, 0.46, 0.072? (a) 0.4 (b) 0.389 (c) 0.46 (d) 0.072
  4. 4.8.63 + 9.8 = ? (a) 9.61 (b) 18.53 (c) 18.43 (d) 18.33
  5. 5.What is the value of the digit 3 in 39.267? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  6. 6.3.14 + 4.8 = ? (a) 3.62 (b) 7.94 (c) 7.84 (d) 8.04
  7. 7.What is the value of the digit 7 in 54.697? (a) 0.007 (b) 0.07 (c) 0.7 (d) 7
  8. 8.Which is the smallest: 0.198, 0.23, 0.063, 0.2? (a) 0.198 (b) 0.23 (c) 0.063 (d) 0.2
  9. 9.Which is the greatest: 0.031, 0.84, 0.8, 0.712? (a) 0.031 (b) 0.84 (c) 0.8 (d) 0.712
  10. 10.2.59 + 3.3 = ? (a) 5.79 (b) 2.92 (c) 5.89 (d) 5.99
  11. 11.What is the value of the digit 7 in 76.159? (a) 0.7 (b) 7 (c) 0.07 (d) 70
  12. 12.Which is the smallest: 0.4, 0.094, 0.312, 0.47? (a) 0.4 (b) 0.094 (c) 0.312 (d) 0.47
  13. 13.What is the value of the digit 8 in 51.368? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  14. 14.Which is the greatest: 0.745, 0.8, 0.86, 0.028? (a) 0.745 (b) 0.8 (c) 0.86 (d) 0.028
  15. 15.What is the value of the digit 3 in 12.463? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  16. 16.3.44 + 8.5 = ? (a) 11.84 (b) 12.04 (c) 11.94 (d) 4.29
  17. 17.Which is the greatest: 0.79, 0.034, 0.7, 0.623? (a) 0.79 (b) 0.034 (c) 0.7 (d) 0.623
  18. 18.Which is the smallest: 0.064, 0.58, 0.494, 0.5? (a) 0.064 (b) 0.58 (c) 0.494 (d) 0.5
  19. 19.What is the value of the digit 7 in 27.365? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  20. 20.Which is the greatest: 0.66, 0.6, 0.024, 0.525? (a) 0.66 (b) 0.6 (c) 0.024 (d) 0.525
  21. 21.2.67 + 9.9 = ? (a) 12.57 (b) 12.47 (c) 3.66 (d) 12.67
  22. 22.What is the value of the digit 7 in 82.937? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  23. 23.8.88 + 7.1 = ? (a) 16.08 (b) 15.98 (c) 15.88 (d) 9.59
  24. 24.Which is the smallest: 0.5, 0.469, 0.043, 0.51? (a) 0.5 (b) 0.469 (c) 0.043 (d) 0.51
  25. 25.What is the value of the digit 1 in 31.498? (a) 0.01 (b) 1 (c) 10 (d) 0.1
  26. 26.What is the value of the digit 1 in 56.132? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  27. 27.2.35 + 6.4 = ? (a) 8.65 (b) 2.99 (c) 8.85 (d) 8.75
  28. 28.3.65 + 2.4 = ? (a) 6.15 (b) 3.89 (c) 6.05 (d) 5.95
  29. 29.What is the value of the digit 9 in 85.769? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  30. 30.6.66 + 7.4 = ? (a) 14.06 (b) 13.96 (c) 7.4 (d) 14.16
  31. 31.4.89 + 7.3 = ? (a) 5.62 (b) 12.09 (c) 12.19 (d) 12.29
  32. 32.Which is the greatest: 0.4, 0.085, 0.42, 0.386? (a) 0.4 (b) 0.085 (c) 0.42 (d) 0.386
  33. 33.What is the value of the digit 4 in 32.475? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  34. 34.Which is the greatest: 0.754, 0.85, 0.8, 0.038? (a) 0.754 (b) 0.85 (c) 0.8 (d) 0.038
  35. 35.6.75 + 2.1 = ? (a) 8.95 (b) 6.96 (c) 8.85 (d) 8.75
  36. 36.What is the value of the digit 6 in 96.314? (a) 60 (b) 6 (c) 0.06 (d) 0.6
  37. 37.8.26 + 4.9 = ? (a) 13.16 (b) 13.06 (c) 8.75 (d) 13.26
  38. 38.Which is the smallest: 0.029, 0.41, 0.4, 0.369? (a) 0.029 (b) 0.41 (c) 0.4 (d) 0.369
  39. 39.2.24 + 9.8 = ? (a) 3.22 (b) 12.04 (c) 11.94 (d) 12.14
  40. 40.5.87 + 3.9 = ? (a) 9.87 (b) 9.77 (c) 9.67 (d) 6.26

Answer key

  1. 0.27
  2. 12.67
  3. 0.072
  4. 18.43
  5. 30
  6. 7.94
  7. 0.007
  8. 0.063
  9. 0.84
  10. 5.89
  11. 70
  12. 0.094
  13. 0.008
  14. 0.86
  15. 0.003
  16. 11.94
  17. 0.79
  18. 0.064
  19. 7
  20. 0.66
  21. 12.57
  22. 0.007
  23. 15.98
  24. 0.043
  25. 1
  26. 0.1
  27. 8.75
  28. 6.05
  29. 0.009
  30. 14.06
  31. 12.19
  32. 0.42
  33. 0.4
  34. 0.85
  35. 8.85
  36. 6
  37. 13.16
  38. 0.029
  39. 12.04
  40. 9.77

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