← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 143 · 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 39. What is the smaller number?
  2. 2.The sum of 3 consecutive numbers is 135. What is the largest of them?
  3. 3.One number is 2 times another. Their difference is 8. What is the smaller number?
  4. 4.The sum of 5 consecutive numbers is 90. What is the smallest of them?
  5. 5.The sum of 5 consecutive numbers is 120. What is the largest of them?
  6. 6.The sum of 5 consecutive numbers is 60. What is the smallest of them?
  7. 7.The sum of 3 consecutive numbers is 39. What is the largest of them?
  8. 8.The sum of two numbers is 34 and their difference is 26. What is the larger number?
  9. 9.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?
  10. 10.The sum of 3 consecutive odd numbers is 219. What is the smallest of them?
  11. 11.One number is 6 times another. Their difference is 35. What is the smaller number?
  12. 12.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?
  13. 13.The sum of 4 consecutive even numbers is 188. What is the smallest of them?
  14. 14.The sum of 3 consecutive even numbers is 66. What is the smallest of them?
  15. 15.The sum of two numbers is 79 and their difference is 49. What is the larger number?
  16. 16.The sum of 4 consecutive numbers is 110. What is the smallest of them?
  17. 17.One number is 3 times another. Their difference is 40. What is the smaller number?
  18. 18.The sum of 4 consecutive numbers is 30. What is the largest of them?
  19. 19.One number is 5 times another. Their difference is 104. What is the smaller number?
  20. 20.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?
  21. 21.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?
  22. 22.The sum of 3 consecutive even numbers is 222. What is the smallest of them?
  23. 23.The sum of two numbers is 128 and their difference is 70. What is the smaller number?
  24. 24.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?
  25. 25.One number is 6 times another. Their difference is 40. What is the smaller number?
  26. 26.The digits of a two-digit number add up to 5. When the digits swap places, the number goes up by 9. What is the number?
  27. 27.The sum of two numbers is 83 and their difference is 57. What is the larger number?
  28. 28.One number is 6 times another. Their difference is 110. What is the smaller number?
  29. 29.The sum of 3 consecutive odd numbers is 123. What is the smallest of them?
  30. 30.The sum of two numbers is 90 and their difference is 82. What is the larger number?
  31. 31.The sum of 4 consecutive even numbers is 148. What is the smallest of them?
  32. 32.The sum of 3 consecutive even numbers is 72. What is the largest of them?
  33. 33.One number is 6 times another. Their difference is 55. What is the smaller number?
  34. 34.The sum of two numbers is 18 and their difference is 8. What is the larger number?
  35. 35.One number is 5 times another. Their difference is 80. What is the smaller number?
  36. 36.The sum of 4 consecutive odd numbers is 320. What is the smallest of them?
  37. 37.One number is 2 times another. Their difference is 32. What is the smaller number?
  38. 38.The sum of 3 consecutive numbers is 54. What is the largest of them?
  39. 39.The sum of two numbers is 96 and their difference is 68. What is the smaller number?
  40. 40.The sum of two numbers is 20 and their difference is 2. What is the smaller number?

Answer key

  1. 13
  2. 46
  3. 8
  4. 16
  5. 26
  6. 10
  7. 14
  8. 30
  9. 89
  10. 71
  11. 7
  12. 78
  13. 44
  14. 20
  15. 64
  16. 26
  17. 20
  18. 9
  19. 26
  20. 68
  21. 18
  22. 72
  23. 29
  24. 27
  25. 8
  26. 23
  27. 70
  28. 22
  29. 39
  30. 86
  31. 34
  32. 26
  33. 11
  34. 13
  35. 20
  36. 77
  37. 32
  38. 19
  39. 14
  40. 9

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