← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 817 · 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 odd numbers is 231. What is the largest of them?
  2. 2.The sum of two numbers is 92 and their difference is 38. What is the smaller number?
  3. 3.The sum of two numbers is 111 and their difference is 23. What is the larger number?
  4. 4.One number is 6 times another. Their difference is 140. What is the smaller number?
  5. 5.The sum of 4 consecutive even numbers is 68. What is the largest of them?
  6. 6.The sum of 4 consecutive numbers is 66. What is the largest of them?
  7. 7.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?
  8. 8.The digits of a two-digit number add up to 13. When the digits swap places, the number goes up by 9. What is the number?
  9. 9.The sum of 3 consecutive even numbers is 72. What is the largest of them?
  10. 10.The sum of two numbers is 31 and their difference is 7. What is the larger number?
  11. 11.The sum of 4 consecutive odd numbers is 136. What is the largest of them?
  12. 12.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 36. What is the number?
  13. 13.One number is 6 times another. Their difference is 100. What is the smaller number?
  14. 14.The sum of two numbers is 48 and their difference is 30. What is the larger number?
  15. 15.One number is 4 times another. Their difference is 21. What is the smaller number?
  16. 16.One number is 6 times another. Their difference is 200. What is the smaller number?
  17. 17.One number is 2 times another. Their difference is 21. What is the smaller number?
  18. 18.The sum of 3 consecutive odd numbers is 135. What is the smallest of them?
  19. 19.The sum of 3 consecutive odd numbers is 123. What is the smallest of them?
  20. 20.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 45. What is the number?
  21. 21.The sum of 3 consecutive numbers is 24. What is the largest of them?
  22. 22.The sum of 3 consecutive odd numbers is 141. What is the largest of them?
  23. 23.The sum of two numbers is 29 and their difference is 27. What is the smaller number?
  24. 24.The sum of two numbers is 162 and their difference is 30. What is the smaller number?
  25. 25.The sum of 5 consecutive numbers is 260. What is the largest of them?
  26. 26.The sum of two numbers is 81 and their difference is 61. What is the smaller number?
  27. 27.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?
  28. 28.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?
  29. 29.One number is 6 times another. Their difference is 115. What is the smaller number?
  30. 30.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?
  31. 31.One number is 6 times another. Their difference is 120. What is the smaller number?
  32. 32.The sum of 4 consecutive even numbers is 148. What is the smallest of them?
  33. 33.The sum of 3 consecutive numbers is 66. What is the largest of them?
  34. 34.The sum of 4 consecutive even numbers is 156. What is the largest of them?
  35. 35.The sum of 3 consecutive numbers is 90. What is the smallest of them?
  36. 36.The sum of 4 consecutive numbers is 154. What is the largest of them?
  37. 37.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 63. What is the number?
  38. 38.The sum of 3 consecutive numbers is 156. What is the smallest of them?
  39. 39.The sum of 4 consecutive odd numbers is 168. What is the largest of them?
  40. 40.The sum of 4 consecutive odd numbers is 128. What is the largest of them?

Answer key

  1. 79
  2. 27
  3. 67
  4. 28
  5. 20
  6. 18
  7. 89
  8. 67
  9. 26
  10. 19
  11. 37
  12. 26
  13. 20
  14. 39
  15. 7
  16. 40
  17. 21
  18. 43
  19. 39
  20. 38
  21. 9
  22. 49
  23. 1
  24. 66
  25. 54
  26. 10
  27. 14
  28. 28
  29. 23
  30. 69
  31. 24
  32. 34
  33. 23
  34. 42
  35. 29
  36. 40
  37. 18
  38. 51
  39. 45
  40. 35

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