← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 529 · 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.One number is 4 times another. Their difference is 81. What is the smaller number?
  2. 2.The sum of 3 consecutive numbers is 135. What is the largest of them?
  3. 3.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?
  4. 4.The sum of 3 consecutive odd numbers is 75. What is the largest of them?
  5. 5.The sum of 5 consecutive numbers is 185. What is the largest of them?
  6. 6.One number is 4 times another. Their difference is 114. What is the smaller number?
  7. 7.One number is 3 times another. Their difference is 44. What is the smaller number?
  8. 8.The sum of 3 consecutive odd numbers is 249. What is the smallest of them?
  9. 9.The sum of two numbers is 69 and their difference is 17. What is the larger number?
  10. 10.The sum of 4 consecutive numbers is 214. What is the smallest of them?
  11. 11.The sum of 3 consecutive numbers is 156. What is the largest of them?
  12. 12.One number is 5 times another. Their difference is 152. What is the smaller number?
  13. 13.One number is 2 times another. Their difference is 27. What is the smaller number?
  14. 14.The sum of 3 consecutive numbers is 84. What is the largest of them?
  15. 15.The sum of two numbers is 42 and their difference is 14. What is the larger number?
  16. 16.The digits of a two-digit number add up to 17. When the digits swap places, the number goes up by 9. What is the number?
  17. 17.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 36. What is the number?
  18. 18.One number is 5 times another. Their difference is 156. What is the smaller number?
  19. 19.The sum of two numbers is 43 and their difference is 23. What is the smaller number?
  20. 20.The sum of 3 consecutive odd numbers is 117. What is the largest of them?
  21. 21.One number is 6 times another. Their difference is 15. What is the smaller number?
  22. 22.The sum of 4 consecutive numbers is 218. What is the largest of them?
  23. 23.The sum of two numbers is 66 and their difference is 2. What is the larger number?
  24. 24.The sum of 4 consecutive numbers is 74. What is the smallest of them?
  25. 25.The sum of 3 consecutive even numbers is 42. What is the largest of them?
  26. 26.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 54. What is the number?
  27. 27.The digits of a two-digit number add up to 15. When the digits swap places, the number goes up by 27. What is the number?
  28. 28.The sum of 3 consecutive even numbers is 96. What is the smallest of them?
  29. 29.The sum of two numbers is 49 and their difference is 37. What is the larger number?
  30. 30.The sum of 3 consecutive numbers is 36. What is the smallest of them?
  31. 31.The sum of 3 consecutive numbers is 117. What is the smallest of them?
  32. 32.The sum of two numbers is 99 and their difference is 63. What is the smaller number?
  33. 33.The sum of two numbers is 87 and their difference is 11. What is the smaller number?
  34. 34.The sum of 3 consecutive even numbers is 114. What is the largest of them?
  35. 35.One number is 5 times another. Their difference is 52. What is the smaller number?
  36. 36.One number is 5 times another. Their difference is 120. What is the smaller number?
  37. 37.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 18. What is the number?
  38. 38.The sum of two numbers is 17 and their difference is 11. What is the larger number?
  39. 39.The sum of two numbers is 89 and their difference is 11. What is the larger number?
  40. 40.The sum of 3 consecutive even numbers is 78. What is the smallest of them?

Answer key

  1. 27
  2. 46
  3. 78
  4. 27
  5. 39
  6. 38
  7. 22
  8. 81
  9. 43
  10. 52
  11. 53
  12. 38
  13. 27
  14. 29
  15. 28
  16. 89
  17. 48
  18. 39
  19. 10
  20. 41
  21. 3
  22. 56
  23. 34
  24. 17
  25. 16
  26. 39
  27. 69
  28. 30
  29. 43
  30. 11
  31. 38
  32. 18
  33. 38
  34. 40
  35. 13
  36. 30
  37. 46
  38. 14
  39. 50
  40. 24

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