← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 263 · 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 13. When the digits swap places, the number goes up by 27. What is the number?
  2. 2.The sum of two numbers is 62 and their difference is 28. What is the larger number?
  3. 3.The sum of 4 consecutive odd numbers is 208. What is the largest of them?
  4. 4.The sum of 5 consecutive numbers is 300. What is the largest of them?
  5. 5.One number is 4 times another. Their difference is 9. What is the smaller number?
  6. 6.The sum of two numbers is 133 and their difference is 33. What is the larger number?
  7. 7.The sum of 3 consecutive numbers is 144. What is the largest of them?
  8. 8.The sum of two numbers is 50 and their difference is 26. What is the smaller number?
  9. 9.The sum of two numbers is 166 and their difference is 12. What is the larger number?
  10. 10.The sum of two numbers is 79 and their difference is 5. What is the larger number?
  11. 11.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?
  12. 12.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 54. 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 3 consecutive numbers is 90. What is the smallest of them?
  15. 15.One number is 6 times another. Their difference is 200. What is the smaller number?
  16. 16.The sum of 5 consecutive numbers is 255. What is the largest of them?
  17. 17.The sum of 5 consecutive numbers is 70. What is the largest of them?
  18. 18.The sum of two numbers is 42 and their difference is 26. What is the smaller number?
  19. 19.The sum of 5 consecutive numbers is 155. What is the largest of them?
  20. 20.The sum of two numbers is 102 and their difference is 70. What is the smaller number?
  21. 21.One number is 6 times another. Their difference is 35. What is the smaller number?
  22. 22.The sum of 4 consecutive numbers is 70. What is the largest of them?
  23. 23.One number is 5 times another. Their difference is 104. What is the smaller number?
  24. 24.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?
  25. 25.The sum of two numbers is 106 and their difference is 68. What is the larger number?
  26. 26.The sum of two numbers is 44 and their difference is 20. What is the larger number?
  27. 27.The sum of two numbers is 135 and their difference is 17. What is the smaller number?
  28. 28.One number is 2 times another. Their difference is 14. What is the smaller number?
  29. 29.The sum of 3 consecutive even numbers is 198. What is the largest of them?
  30. 30.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?
  31. 31.The sum of 4 consecutive even numbers is 92. What is the largest of them?
  32. 32.The sum of two numbers is 26 and their difference is 6. What is the larger number?
  33. 33.The sum of two numbers is 93 and their difference is 55. What is the larger number?
  34. 34.The sum of 3 consecutive numbers is 99. What is the smallest of them?
  35. 35.The sum of two numbers is 152 and their difference is 44. What is the larger number?
  36. 36.The sum of two numbers is 115 and their difference is 63. What is the smaller number?
  37. 37.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?
  38. 38.One number is 5 times another. Their difference is 140. What is the smaller number?
  39. 39.The sum of 4 consecutive odd numbers is 184. What is the largest of them?
  40. 40.One number is 4 times another. Their difference is 69. What is the smaller number?

Answer key

  1. 58
  2. 45
  3. 55
  4. 62
  5. 3
  6. 83
  7. 49
  8. 12
  9. 89
  10. 42
  11. 67
  12. 39
  13. 25
  14. 29
  15. 40
  16. 53
  17. 16
  18. 8
  19. 33
  20. 16
  21. 7
  22. 19
  23. 26
  24. 68
  25. 87
  26. 32
  27. 59
  28. 14
  29. 68
  30. 49
  31. 26
  32. 16
  33. 74
  34. 32
  35. 98
  36. 26
  37. 59
  38. 35
  39. 49
  40. 23

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