← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 241 · 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 two numbers is 63 and their difference is 1. What is the smaller number?
  2. 2.The digits of a two-digit number add up to 6. When the digits swap places, the number goes up by 36. What is the number?
  3. 3.The sum of two numbers is 55 and their difference is 13. What is the smaller number?
  4. 4.One number is 5 times another. Their difference is 72. What is the smaller number?
  5. 5.One number is 5 times another. Their difference is 148. What is the smaller number?
  6. 6.The sum of two numbers is 160 and their difference is 26. What is the larger number?
  7. 7.The sum of 3 consecutive even numbers is 222. What is the smallest of them?
  8. 8.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?
  9. 9.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?
  10. 10.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?
  11. 11.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?
  12. 12.One number is 3 times another. Their difference is 22. What is the smaller number?
  13. 13.The sum of 5 consecutive numbers is 75. What is the smallest of them?
  14. 14.The sum of 4 consecutive numbers is 46. What is the smallest of them?
  15. 15.The sum of two numbers is 39 and their difference is 1. What is the smaller number?
  16. 16.The sum of 5 consecutive numbers is 230. What is the smallest of them?
  17. 17.The digits of a two-digit number add up to 7. When the digits swap places, the number goes up by 27. What is the number?
  18. 18.One number is 6 times another. Their difference is 200. What is the smaller number?
  19. 19.The sum of 3 consecutive even numbers is 150. What is the largest of them?
  20. 20.The sum of 3 consecutive even numbers is 72. What is the largest of them?
  21. 21.The sum of 4 consecutive numbers is 82. What is the largest of them?
  22. 22.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 36. What is the number?
  23. 23.The sum of 3 consecutive odd numbers is 225. What is the smallest of them?
  24. 24.The sum of 3 consecutive even numbers is 156. What is the smallest of them?
  25. 25.The sum of 4 consecutive numbers is 178. What is the largest of them?
  26. 26.The sum of two numbers is 116 and their difference is 12. What is the smaller number?
  27. 27.The sum of 3 consecutive even numbers is 120. What is the largest of them?
  28. 28.One number is 5 times another. Their difference is 144. What is the smaller number?
  29. 29.The sum of 3 consecutive odd numbers is 165. What is the smallest of them?
  30. 30.The sum of 3 consecutive numbers is 132. What is the largest of them?
  31. 31.The sum of two numbers is 24 and their difference is 2. What is the smaller number?
  32. 32.The sum of 3 consecutive numbers is 33. What is the smallest of them?
  33. 33.The sum of 3 consecutive even numbers is 108. What is the largest of them?
  34. 34.One number is 5 times another. Their difference is 20. What is the smaller number?
  35. 35.The sum of 3 consecutive numbers is 63. What is the largest of them?
  36. 36.One number is 2 times another. Their difference is 35. What is the smaller number?
  37. 37.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?
  38. 38.The sum of 3 consecutive numbers is 21. What is the largest of them?
  39. 39.The sum of 3 consecutive numbers is 126. What is the smallest of them?
  40. 40.One number is 3 times another. Their difference is 66. What is the smaller number?

Answer key

  1. 31
  2. 15
  3. 21
  4. 18
  5. 37
  6. 93
  7. 72
  8. 14
  9. 18
  10. 89
  11. 69
  12. 11
  13. 13
  14. 10
  15. 19
  16. 44
  17. 25
  18. 40
  19. 52
  20. 26
  21. 22
  22. 37
  23. 73
  24. 50
  25. 46
  26. 52
  27. 42
  28. 36
  29. 53
  30. 45
  31. 11
  32. 10
  33. 38
  34. 5
  35. 22
  36. 35
  37. 36
  38. 8
  39. 41
  40. 33

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