← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 260 · 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 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?
  2. 2.The sum of 5 consecutive numbers is 275. What is the smallest of them?
  3. 3.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?
  4. 4.One number is 4 times another. Their difference is 90. What is the smaller number?
  5. 5.The sum of 3 consecutive numbers is 144. What is the smallest of them?
  6. 6.The sum of 3 consecutive even numbers is 222. What is the smallest of them?
  7. 7.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?
  8. 8.The sum of two numbers is 107 and their difference is 15. What is the larger number?
  9. 9.The sum of 4 consecutive even numbers is 84. What is the largest of them?
  10. 10.The digits of a two-digit number add up to 13. When the digits swap places, the number goes up by 45. What is the number?
  11. 11.The sum of two numbers is 62 and their difference is 28. What is the larger number?
  12. 12.The sum of two numbers is 77 and their difference is 45. What is the smaller number?
  13. 13.The sum of 3 consecutive numbers is 21. What is the smallest of them?
  14. 14.The sum of 3 consecutive numbers is 117. What is the smallest of them?
  15. 15.The sum of two numbers is 88 and their difference is 46. What is the larger number?
  16. 16.The sum of 4 consecutive even numbers is 300. What is the smallest of them?
  17. 17.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?
  18. 18.The sum of 3 consecutive even numbers is 60. What is the smallest of them?
  19. 19.The sum of 4 consecutive odd numbers is 264. What is the largest of them?
  20. 20.The sum of 3 consecutive numbers is 165. What is the smallest of them?
  21. 21.The sum of 5 consecutive numbers is 95. What is the smallest of them?
  22. 22.One number is 5 times another. Their difference is 52. What is the smaller number?
  23. 23.The sum of 3 consecutive even numbers is 246. What is the smallest of them?
  24. 24.The sum of 5 consecutive numbers is 130. What is the smallest of them?
  25. 25.The sum of 3 consecutive even numbers is 96. What is the largest of them?
  26. 26.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 45. What is the number?
  27. 27.One number is 4 times another. Their difference is 15. What is the smaller number?
  28. 28.The sum of 3 consecutive numbers is 108. What is the smallest of them?
  29. 29.The sum of 3 consecutive numbers is 99. What is the largest of them?
  30. 30.The sum of two numbers is 84 and their difference is 72. What is the larger number?
  31. 31.The sum of two numbers is 111 and their difference is 45. What is the larger number?
  32. 32.The sum of 3 consecutive numbers is 153. What is the largest of them?
  33. 33.One number is 5 times another. Their difference is 12. What is the smaller number?
  34. 34.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?
  35. 35.The sum of two numbers is 66 and their difference is 8. What is the larger number?
  36. 36.The sum of 5 consecutive numbers is 310. What is the largest of them?
  37. 37.The sum of 4 consecutive even numbers is 100. What is the largest of them?
  38. 38.One number is 2 times another. Their difference is 37. What is the smaller number?
  39. 39.The sum of 3 consecutive odd numbers is 45. What is the largest of them?
  40. 40.The sum of 5 consecutive numbers is 215. What is the smallest of them?

Answer key

  1. 25
  2. 53
  3. 14
  4. 30
  5. 47
  6. 72
  7. 78
  8. 61
  9. 24
  10. 49
  11. 45
  12. 16
  13. 6
  14. 38
  15. 67
  16. 72
  17. 79
  18. 18
  19. 69
  20. 54
  21. 17
  22. 13
  23. 80
  24. 24
  25. 34
  26. 38
  27. 5
  28. 35
  29. 34
  30. 78
  31. 78
  32. 52
  33. 3
  34. 59
  35. 37
  36. 64
  37. 28
  38. 37
  39. 17
  40. 41

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