← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 385 · 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 6 times another. Their difference is 80. What is the smaller number?
  2. 2.The sum of two numbers is 49 and their difference is 19. What is the smaller number?
  3. 3.The sum of 4 consecutive odd numbers is 112. What is the largest of them?
  4. 4.One number is 6 times another. Their difference is 160. What is the smaller number?
  5. 5.The sum of 4 consecutive odd numbers is 56. What is the smallest of them?
  6. 6.One number is 2 times another. Their difference is 21. What is the smaller number?
  7. 7.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 9. What is the number?
  8. 8.The sum of 5 consecutive numbers is 235. What is the largest of them?
  9. 9.The sum of two numbers is 20 and their difference is 14. What is the larger number?
  10. 10.One number is 3 times another. Their difference is 8. What is the smaller number?
  11. 11.The sum of 3 consecutive numbers is 27. What is the largest of them?
  12. 12.The sum of 3 consecutive numbers is 36. What is the smallest of them?
  13. 13.The sum of 4 consecutive numbers is 54. What is the largest of them?
  14. 14.The sum of two numbers is 36 and their difference is 10. What is the larger number?
  15. 15.One number is 4 times another. Their difference is 120. What is the smaller number?
  16. 16.The sum of two numbers is 49 and their difference is 43. What is the larger number?
  17. 17.One number is 4 times another. Their difference is 57. What is the smaller number?
  18. 18.The sum of 4 consecutive odd numbers is 312. What is the smallest of them?
  19. 19.One number is 2 times another. Their difference is 23. What is the smaller number?
  20. 20.The sum of two numbers is 31 and their difference is 5. What is the smaller number?
  21. 21.The sum of 4 consecutive even numbers is 116. What is the smallest of them?
  22. 22.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 27. What is the number?
  23. 23.The sum of two numbers is 95 and their difference is 45. What is the larger number?
  24. 24.The digits of a two-digit number add up to 7. When the digits swap places, the number goes up by 45. What is the number?
  25. 25.The sum of two numbers is 27 and their difference is 1. What is the larger number?
  26. 26.The sum of two numbers is 66 and their difference is 62. What is the smaller number?
  27. 27.The sum of two numbers is 123 and their difference is 25. What is the larger number?
  28. 28.The sum of 3 consecutive odd numbers is 87. What is the smallest of them?
  29. 29.The sum of 4 consecutive numbers is 114. What is the smallest of them?
  30. 30.The sum of 3 consecutive even numbers is 126. What is the largest of them?
  31. 31.The sum of 3 consecutive odd numbers is 159. What is the smallest of them?
  32. 32.The sum of two numbers is 93 and their difference is 51. What is the smaller number?
  33. 33.The sum of 5 consecutive numbers is 170. What is the smallest of them?
  34. 34.The sum of two numbers is 48 and their difference is 28. What is the smaller number?
  35. 35.The sum of two numbers is 132 and their difference is 28. What is the smaller number?
  36. 36.The digits of a two-digit number add up to 5. When the digits swap places, the number goes up by 27. What is the number?
  37. 37.The sum of two numbers is 53 and their difference is 47. What is the larger number?
  38. 38.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 54. What is the number?
  39. 39.The sum of 4 consecutive numbers is 154. What is the smallest of them?
  40. 40.The sum of 4 consecutive numbers is 38. What is the largest of them?

Answer key

  1. 16
  2. 15
  3. 31
  4. 32
  5. 11
  6. 21
  7. 56
  8. 49
  9. 17
  10. 4
  11. 10
  12. 11
  13. 15
  14. 23
  15. 40
  16. 46
  17. 19
  18. 75
  19. 23
  20. 13
  21. 26
  22. 36
  23. 70
  24. 16
  25. 14
  26. 2
  27. 74
  28. 27
  29. 27
  30. 44
  31. 51
  32. 21
  33. 32
  34. 10
  35. 52
  36. 14
  37. 50
  38. 28
  39. 37
  40. 11

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