← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 513 · 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 numbers is 129. What is the smallest of them?
  2. 2.The sum of 4 consecutive odd numbers is 72. What is the largest of them?
  3. 3.One number is 5 times another. Their difference is 64. What is the smaller number?
  4. 4.The sum of 3 consecutive numbers is 174. What is the smallest of them?
  5. 5.The sum of 5 consecutive numbers is 45. What is the smallest of them?
  6. 6.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?
  7. 7.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 18. What is the number?
  8. 8.The sum of two numbers is 134 and their difference is 2. What is the smaller number?
  9. 9.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?
  10. 10.The sum of 3 consecutive numbers is 177. What is the largest of them?
  11. 11.One number is 6 times another. Their difference is 95. What is the smaller number?
  12. 12.The sum of 4 consecutive even numbers is 52. What is the largest of them?
  13. 13.One number is 4 times another. Their difference is 57. What is the smaller number?
  14. 14.The sum of 4 consecutive even numbers is 172. What is the largest of them?
  15. 15.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?
  16. 16.The digits of a two-digit number add up to 13. When the digits swap places, the number goes up by 27. What is the number?
  17. 17.The sum of 3 consecutive even numbers is 180. What is the largest of them?
  18. 18.The sum of 5 consecutive numbers is 175. What is the smallest of them?
  19. 19.The sum of 3 consecutive odd numbers is 177. What is the smallest of them?
  20. 20.The sum of 5 consecutive numbers is 180. What is the smallest of them?
  21. 21.The sum of two numbers is 23 and their difference is 15. What is the smaller number?
  22. 22.The sum of two numbers is 98 and their difference is 68. What is the smaller number?
  23. 23.The sum of 5 consecutive numbers is 170. What is the largest of them?
  24. 24.One number is 6 times another. Their difference is 80. What is the smaller number?
  25. 25.The sum of 3 consecutive numbers is 63. What is the largest of them?
  26. 26.The sum of 4 consecutive odd numbers is 312. What is the smallest of them?
  27. 27.The sum of 4 consecutive numbers is 58. What is the largest of them?
  28. 28.One number is 2 times another. Their difference is 5. What is the smaller number?
  29. 29.The sum of two numbers is 97 and their difference is 51. What is the larger number?
  30. 30.One number is 4 times another. Their difference is 105. What is the smaller number?
  31. 31.The sum of 3 consecutive numbers is 48. What is the smallest of them?
  32. 32.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 63. What is the number?
  33. 33.The sum of 3 consecutive numbers is 21. What is the smallest of them?
  34. 34.The sum of 5 consecutive numbers is 75. What is the smallest of them?
  35. 35.The sum of 4 consecutive even numbers is 212. What is the smallest of them?
  36. 36.The sum of 3 consecutive odd numbers is 69. What is the largest of them?
  37. 37.The sum of 4 consecutive odd numbers is 80. What is the smallest of them?
  38. 38.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?
  39. 39.The sum of two numbers is 109 and their difference is 25. What is the larger number?
  40. 40.The sum of two numbers is 58 and their difference is 42. What is the larger number?

Answer key

  1. 42
  2. 21
  3. 16
  4. 57
  5. 7
  6. 19
  7. 35
  8. 66
  9. 16
  10. 60
  11. 19
  12. 16
  13. 19
  14. 46
  15. 89
  16. 58
  17. 62
  18. 33
  19. 57
  20. 34
  21. 4
  22. 15
  23. 36
  24. 16
  25. 22
  26. 75
  27. 16
  28. 5
  29. 74
  30. 35
  31. 15
  32. 29
  33. 6
  34. 13
  35. 50
  36. 25
  37. 17
  38. 26
  39. 67
  40. 50

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