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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 365 · 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 5 in 56.431? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  2. 2.3.17 + 8.5 = ? (a) 11.57 (b) 4.02 (c) 11.77 (d) 11.67
  3. 3.1.02 + 1.2 = ? (a) 2.22 (b) 1.14 (c) 2.12 (d) 2.32
  4. 4.What is the value of the digit 7 in 91.782? (a) 7 (b) 0.07 (c) 0.7 (d) 0.007
  5. 5.6.44 + 1.8 = ? (a) 8.24 (b) 8.14 (c) 8.34 (d) 6.62
  6. 6.7.26 + 3.4 = ? (a) 10.66 (b) 10.76 (c) 7.6 (d) 10.56
  7. 7.Which is the smallest: 0.449, 0.53, 0.5, 0.012? (a) 0.449 (b) 0.53 (c) 0.5 (d) 0.012
  8. 8.Which is the greatest: 0.039, 0.63, 0.6, 0.589? (a) 0.039 (b) 0.63 (c) 0.6 (d) 0.589
  9. 9.9.87 + 4.4 = ? (a) 14.37 (b) 14.27 (c) 14.17 (d) 10.31
  10. 10.7.35 + 4.1 = ? (a) 11.35 (b) 11.45 (c) 7.76 (d) 11.55
  11. 11.Which is the smallest: 0.089, 0.561, 0.62, 0.6? (a) 0.089 (b) 0.561 (c) 0.62 (d) 0.6
  12. 12.What is the value of the digit 8 in 82.541? (a) 0.8 (b) 80 (c) 8 (d) 0.08
  13. 13.2.92 + 6.5 = ? (a) 3.57 (b) 9.42 (c) 9.52 (d) 9.32
  14. 14.What is the value of the digit 1 in 91.634? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  15. 15.6.14 + 1.1 = ? (a) 7.34 (b) 7.14 (c) 6.25 (d) 7.24
  16. 16.6.27 + 9.7 = ? (a) 7.24 (b) 16.07 (c) 15.87 (d) 15.97
  17. 17.Which is the greatest: 0.632, 0.72, 0.7, 0.049? (a) 0.632 (b) 0.72 (c) 0.7 (d) 0.049
  18. 18.Which is the smallest: 0.26, 0.098, 0.2, 0.173? (a) 0.26 (b) 0.098 (c) 0.2 (d) 0.173
  19. 19.Which is the greatest: 0.063, 0.6, 0.513, 0.67? (a) 0.063 (b) 0.6 (c) 0.513 (d) 0.67
  20. 20.What is the value of the digit 9 in 73.149? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  21. 21.Which is the smallest: 0.2, 0.154, 0.21, 0.072? (a) 0.2 (b) 0.154 (c) 0.21 (d) 0.072
  22. 22.8.89 + 7.7 = ? (a) 16.69 (b) 16.59 (c) 9.66 (d) 16.49
  23. 23.6.07 + 2.6 = ? (a) 6.33 (b) 8.77 (c) 8.57 (d) 8.67
  24. 24.What is the value of the digit 7 in 71.689? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  25. 25.3.08 + 4.5 = ? (a) 3.53 (b) 7.58 (c) 7.68 (d) 7.48
  26. 26.4.75 + 9.3 = ? (a) 5.68 (b) 14.15 (c) 13.95 (d) 14.05
  27. 27.What is the value of the digit 9 in 27.915? (a) 0.9 (b) 0.09 (c) 9 (d) 0.009
  28. 28.What is the value of the digit 8 in 24.871? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  29. 29.What is the value of the digit 1 in 63.189? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  30. 30.What is the value of the digit 5 in 56.912? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  31. 31.Which is the smallest: 0.042, 0.7, 0.695, 0.71? (a) 0.042 (b) 0.7 (c) 0.695 (d) 0.71
  32. 32.Which is the greatest: 0.23, 0.2, 0.075, 0.198? (a) 0.23 (b) 0.2 (c) 0.075 (d) 0.198
  33. 33.6.11 + 4.4 = ? (a) 10.61 (b) 10.51 (c) 6.55 (d) 10.41
  34. 34.5.69 + 3.6 = ? (a) 9.19 (b) 9.39 (c) 6.05 (d) 9.29
  35. 35.3.98 + 5.7 = ? (a) 9.78 (b) 4.55 (c) 9.68 (d) 9.58
  36. 36.What is the value of the digit 8 in 56.812? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  37. 37.Which is the smallest: 0.4, 0.43, 0.344, 0.043? (a) 0.4 (b) 0.43 (c) 0.344 (d) 0.043
  38. 38.What is the value of the digit 1 in 61.324? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  39. 39.Which is the smallest: 0.25, 0.041, 0.111, 0.2? (a) 0.25 (b) 0.041 (c) 0.111 (d) 0.2
  40. 40.2.67 + 4.8 = ? (a) 7.57 (b) 3.15 (c) 7.37 (d) 7.47

Answer key

  1. 50
  2. 11.67
  3. 2.22
  4. 0.7
  5. 8.24
  6. 10.66
  7. 0.012
  8. 0.63
  9. 14.27
  10. 11.45
  11. 0.089
  12. 80
  13. 9.42
  14. 1
  15. 7.24
  16. 15.97
  17. 0.72
  18. 0.098
  19. 0.67
  20. 0.009
  21. 0.072
  22. 16.59
  23. 8.67
  24. 70
  25. 7.58
  26. 14.05
  27. 0.9
  28. 0.8
  29. 0.1
  30. 50
  31. 0.042
  32. 0.23
  33. 10.51
  34. 9.29
  35. 9.68
  36. 0.8
  37. 0.043
  38. 1
  39. 0.041
  40. 7.47

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