← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 716 · 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 9. When the digits swap places, the number goes up by 27. What is the number?
  2. 2.One number is 4 times another. Their difference is 72. What is the smaller number?
  3. 3.The sum of 3 consecutive odd numbers is 39. What is the smallest of them?
  4. 4.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?
  5. 5.One number is 6 times another. Their difference is 90. What is the smaller number?
  6. 6.The sum of two numbers is 54 and their difference is 12. What is the larger number?
  7. 7.The sum of 4 consecutive even numbers is 108. What is the smallest of them?
  8. 8.The sum of 4 consecutive even numbers is 60. What is the smallest of them?
  9. 9.One number is 5 times another. Their difference is 16. What is the smaller number?
  10. 10.The sum of 4 consecutive numbers is 126. What is the smallest of them?
  11. 11.The sum of two numbers is 69 and their difference is 65. What is the smaller number?
  12. 12.The digits of a two-digit number add up to 13. When the digits swap places, the number goes up by 9. What is the number?
  13. 13.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?
  14. 14.The sum of two numbers is 103 and their difference is 59. What is the larger number?
  15. 15.The sum of 3 consecutive even numbers is 108. What is the largest of them?
  16. 16.The sum of 4 consecutive numbers is 154. What is the smallest of them?
  17. 17.The sum of 4 consecutive odd numbers is 328. What is the largest of them?
  18. 18.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?
  19. 19.The sum of two numbers is 82 and their difference is 44. What is the smaller number?
  20. 20.One number is 6 times another. Their difference is 180. What is the smaller number?
  21. 21.The sum of 3 consecutive even numbers is 150. What is the smallest of them?
  22. 22.One number is 3 times another. Their difference is 62. What is the smaller number?
  23. 23.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?
  24. 24.The sum of two numbers is 21 and their difference is 11. What is the smaller number?
  25. 25.The sum of 5 consecutive numbers is 290. What is the smallest of them?
  26. 26.The sum of 4 consecutive numbers is 134. What is the largest of them?
  27. 27.One number is 6 times another. Their difference is 80. What is the smaller number?
  28. 28.The sum of two numbers is 22 and their difference is 8. What is the larger number?
  29. 29.One number is 5 times another. Their difference is 136. What is the smaller number?
  30. 30.The sum of 5 consecutive numbers is 90. What is the smallest of them?
  31. 31.The sum of 5 consecutive numbers is 40. What is the largest of them?
  32. 32.The sum of 5 consecutive numbers is 100. What is the largest of them?
  33. 33.The sum of 4 consecutive even numbers is 316. What is the smallest of them?
  34. 34.The sum of 5 consecutive numbers is 180. What is the largest of them?
  35. 35.The sum of two numbers is 75 and their difference is 33. What is the larger number?
  36. 36.The sum of two numbers is 13 and their difference is 9. What is the smaller number?
  37. 37.One number is 5 times another. Their difference is 156. What is the smaller number?
  38. 38.The sum of 5 consecutive numbers is 95. What is the largest of them?
  39. 39.The sum of 4 consecutive even numbers is 276. What is the largest of them?
  40. 40.One number is 3 times another. Their difference is 80. What is the smaller number?

Answer key

  1. 36
  2. 24
  3. 11
  4. 27
  5. 18
  6. 33
  7. 24
  8. 12
  9. 4
  10. 30
  11. 2
  12. 67
  13. 25
  14. 81
  15. 38
  16. 37
  17. 85
  18. 58
  19. 19
  20. 36
  21. 48
  22. 31
  23. 78
  24. 5
  25. 56
  26. 35
  27. 16
  28. 15
  29. 34
  30. 16
  31. 10
  32. 22
  33. 76
  34. 38
  35. 54
  36. 2
  37. 39
  38. 21
  39. 72
  40. 40

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