← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 671 · 40 questions
TalentJR

The method (Use the structure): n consecutive numbers with sum S: the middle (average) is S ÷ n. From sum and difference: larger = (sum + difference) ÷ 2, smaller = (sum − difference) ÷ 2. Swapping the digits changes the number by 9 × (difference of the digits). “k times another, difference D”: smaller = D ÷ (k − 1).

NameDateTime takenScore ___ / 40
  1. 1.The sum of 3 consecutive numbers is 54. What is the largest of them?
  2. 2.The sum of 5 consecutive numbers is 105. What is the smallest of them?
  3. 3.The sum of two numbers is 49 and their difference is 21. What is the smaller number?
  4. 4.The sum of 5 consecutive numbers is 290. What is the largest of them?
  5. 5.One number is 4 times another. Their difference is 36. What is the smaller number?
  6. 6.The sum of 3 consecutive even numbers is 66. What is the smallest of them?
  7. 7.One number is 2 times another. Their difference is 34. What is the smaller number?
  8. 8.The sum of two numbers is 34 and their difference is 6. What is the smaller number?
  9. 9.One number is 5 times another. Their difference is 128. What is the smaller number?
  10. 10.The sum of two numbers is 71 and their difference is 47. What is the larger number?
  11. 11.The sum of 5 consecutive numbers is 190. What is the smallest of them?
  12. 12.The sum of 4 consecutive odd numbers is 40. What is the largest of them?
  13. 13.The sum of 3 consecutive even numbers is 234. What is the smallest of them?
  14. 14.The sum of 4 consecutive numbers is 114. What is the largest of them?
  15. 15.The sum of 5 consecutive numbers is 195. What is the largest of them?
  16. 16.The sum of 4 consecutive odd numbers is 160. What is the smallest of them?
  17. 17.The digits of a two-digit number add up to 15. When the digits swap places, the number goes up by 9. What is the number?
  18. 18.The sum of 4 consecutive numbers is 50. What is the smallest of them?
  19. 19.The sum of two numbers is 25 and their difference is 17. What is the smaller number?
  20. 20.The sum of two numbers is 60 and their difference is 18. What is the smaller number?
  21. 21.The sum of two numbers is 76 and their difference is 14. What is the larger number?
  22. 22.The sum of 3 consecutive even numbers is 198. What is the smallest of them?
  23. 23.The sum of 3 consecutive even numbers is 222. What is the largest of them?
  24. 24.The digits of a two-digit number add up to 16. When the digits swap places, the number goes up by 18. What is the number?
  25. 25.One number is 4 times another. Their difference is 105. What is the smaller number?
  26. 26.One number is 6 times another. Their difference is 105. What is the smaller number?
  27. 27.The sum of two numbers is 43 and their difference is 9. What is the larger number?
  28. 28.The sum of two numbers is 104 and their difference is 32. What is the larger number?
  29. 29.One number is 5 times another. Their difference is 56. What is the smaller number?
  30. 30.One number is 6 times another. Their difference is 20. What is the smaller number?
  31. 31.The sum of two numbers is 55 and their difference is 49. What is the larger number?
  32. 32.The sum of 3 consecutive even numbers is 216. What is the smallest of them?
  33. 33.The sum of two numbers is 104 and their difference is 36. What is the smaller number?
  34. 34.The sum of 3 consecutive odd numbers is 27. What is the smallest of them?
  35. 35.The sum of 3 consecutive even numbers is 42. What is the smallest of them?
  36. 36.The sum of two numbers is 172 and their difference is 6. What is the smaller number?
  37. 37.The sum of 4 consecutive numbers is 198. What is the smallest of them?
  38. 38.One number is 2 times another. Their difference is 39. What is the smaller number?
  39. 39.One number is 4 times another. Their difference is 117. What is the smaller number?
  40. 40.The sum of two numbers is 66 and their difference is 6. What is the larger number?

Answer key

  1. 19
  2. 19
  3. 14
  4. 60
  5. 12
  6. 20
  7. 34
  8. 14
  9. 32
  10. 59
  11. 36
  12. 13
  13. 76
  14. 30
  15. 41
  16. 37
  17. 78
  18. 11
  19. 4
  20. 21
  21. 45
  22. 64
  23. 76
  24. 79
  25. 35
  26. 21
  27. 26
  28. 68
  29. 14
  30. 4
  31. 52
  32. 70
  33. 34
  34. 7
  35. 12
  36. 83
  37. 48
  38. 39
  39. 39
  40. 36

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude