← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 926 · 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 4 consecutive even numbers is 180. What is the largest of them?
  2. 2.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?
  3. 3.The digits of a two-digit number add up to 16. When the digits swap places, the number goes up by 18. What is the number?
  4. 4.The sum of two numbers is 30 and their difference is 6. What is the smaller number?
  5. 5.One number is 5 times another. Their difference is 88. What is the smaller number?
  6. 6.The sum of 4 consecutive numbers is 26. What is the smallest of them?
  7. 7.The sum of 4 consecutive numbers is 62. What is the smallest of them?
  8. 8.The sum of 3 consecutive numbers is 90. What is the smallest of them?
  9. 9.The sum of two numbers is 149 and their difference is 31. What is the larger number?
  10. 10.The sum of 4 consecutive numbers is 70. What is the smallest of them?
  11. 11.The sum of two numbers is 44 and their difference is 36. What is the larger number?
  12. 12.The sum of 4 consecutive odd numbers is 200. What is the largest of them?
  13. 13.The sum of 5 consecutive numbers is 170. What is the largest of them?
  14. 14.The sum of 3 consecutive odd numbers is 207. What is the smallest of them?
  15. 15.One number is 5 times another. Their difference is 96. What is the smaller number?
  16. 16.One number is 3 times another. Their difference is 38. What is the smaller number?
  17. 17.One number is 6 times another. Their difference is 60. What is the smaller number?
  18. 18.The sum of 3 consecutive numbers is 33. What is the smallest of them?
  19. 19.The sum of 4 consecutive even numbers is 196. What is the smallest of them?
  20. 20.The sum of 4 consecutive numbers is 90. What is the smallest of them?
  21. 21.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?
  22. 22.The sum of 3 consecutive odd numbers is 51. What is the smallest of them?
  23. 23.The sum of two numbers is 41 and their difference is 3. What is the larger number?
  24. 24.The sum of 3 consecutive odd numbers is 63. What is the smallest of them?
  25. 25.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?
  26. 26.The sum of 4 consecutive odd numbers is 296. What is the smallest of them?
  27. 27.The sum of 4 consecutive numbers is 98. What is the smallest of them?
  28. 28.One number is 4 times another. Their difference is 117. What is the smaller number?
  29. 29.The sum of two numbers is 29 and their difference is 17. What is the smaller number?
  30. 30.The sum of 3 consecutive numbers is 57. What is the smallest of them?
  31. 31.The sum of two numbers is 34 and their difference is 2. What is the larger number?
  32. 32.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?
  33. 33.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?
  34. 34.The sum of 3 consecutive odd numbers is 237. What is the smallest of them?
  35. 35.The sum of two numbers is 11 and their difference is 9. What is the smaller number?
  36. 36.The sum of two numbers is 60 and their difference is 8. What is the smaller number?
  37. 37.The sum of 4 consecutive numbers is 54. What is the smallest of them?
  38. 38.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?
  39. 39.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?
  40. 40.The sum of 5 consecutive numbers is 70. What is the smallest of them?

Answer key

  1. 48
  2. 78
  3. 79
  4. 12
  5. 22
  6. 5
  7. 14
  8. 29
  9. 90
  10. 16
  11. 40
  12. 53
  13. 36
  14. 67
  15. 24
  16. 19
  17. 12
  18. 10
  19. 46
  20. 21
  21. 16
  22. 15
  23. 22
  24. 19
  25. 69
  26. 71
  27. 23
  28. 39
  29. 6
  30. 18
  31. 18
  32. 36
  33. 89
  34. 77
  35. 1
  36. 26
  37. 12
  38. 58
  39. 37
  40. 12

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