← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 318 · 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 even numbers is 138. What is the largest of them?
  2. 2.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?
  3. 3.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 72. What is the number?
  4. 4.One number is 4 times another. Their difference is 78. What is the smaller number?
  5. 5.The sum of 4 consecutive numbers is 46. What is the smallest of them?
  6. 6.One number is 3 times another. Their difference is 70. What is the smaller number?
  7. 7.The digits of a two-digit number add up to 14. When the digits swap places, the number goes up by 18. What is the number?
  8. 8.The sum of 4 consecutive even numbers is 284. What is the largest of them?
  9. 9.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?
  10. 10.The sum of two numbers is 51 and their difference is 23. What is the smaller number?
  11. 11.The sum of 5 consecutive numbers is 300. What is the largest of them?
  12. 12.One number is 5 times another. Their difference is 116. What is the smaller number?
  13. 13.The sum of 5 consecutive numbers is 270. What is the largest of them?
  14. 14.The sum of 3 consecutive numbers is 147. What is the largest of them?
  15. 15.The sum of 3 consecutive even numbers is 180. What is the smallest of them?
  16. 16.The sum of 5 consecutive numbers is 180. What is the smallest of them?
  17. 17.The sum of two numbers is 50 and their difference is 38. What is the smaller number?
  18. 18.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 45. What is the number?
  19. 19.The sum of two numbers is 135 and their difference is 49. What is the smaller number?
  20. 20.The sum of two numbers is 70 and their difference is 4. What is the larger number?
  21. 21.The sum of 3 consecutive even numbers is 186. What is the largest of them?
  22. 22.The sum of two numbers is 35 and their difference is 5. What is the smaller number?
  23. 23.The sum of 4 consecutive even numbers is 324. What is the largest of them?
  24. 24.The sum of 5 consecutive numbers is 145. What is the smallest of them?
  25. 25.One number is 2 times another. Their difference is 28. What is the smaller number?
  26. 26.The sum of 4 consecutive numbers is 170. What is the smallest of them?
  27. 27.The digits of a two-digit number add up to 14. When the digits swap places, the number goes up by 36. What is the number?
  28. 28.The sum of two numbers is 63 and their difference is 31. What is the smaller number?
  29. 29.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?
  30. 30.The sum of two numbers is 85 and their difference is 77. What is the larger number?
  31. 31.The sum of 4 consecutive odd numbers is 72. What is the smallest of them?
  32. 32.One number is 2 times another. Their difference is 40. What is the smaller number?
  33. 33.One number is 5 times another. Their difference is 60. What is the smaller number?
  34. 34.The sum of 3 consecutive numbers is 132. What is the smallest of them?
  35. 35.The sum of two numbers is 42 and their difference is 32. What is the larger number?
  36. 36.The sum of two numbers is 47 and their difference is 29. What is the smaller number?
  37. 37.One number is 4 times another. Their difference is 36. What is the smaller number?
  38. 38.The sum of 4 consecutive odd numbers is 120. What is the smallest of them?
  39. 39.The sum of 3 consecutive odd numbers is 129. What is the smallest of them?
  40. 40.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 54. What is the number?

Answer key

  1. 48
  2. 67
  3. 19
  4. 26
  5. 10
  6. 35
  7. 68
  8. 74
  9. 78
  10. 14
  11. 62
  12. 29
  13. 56
  14. 50
  15. 58
  16. 34
  17. 6
  18. 27
  19. 43
  20. 37
  21. 64
  22. 15
  23. 84
  24. 27
  25. 28
  26. 41
  27. 59
  28. 16
  29. 69
  30. 81
  31. 15
  32. 40
  33. 15
  34. 43
  35. 37
  36. 9
  37. 12
  38. 27
  39. 41
  40. 17

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