← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 156 · 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.One number is 2 times another. Their difference is 18. What is the smaller number?
  2. 2.The sum of 3 consecutive odd numbers is 87. What is the largest of them?
  3. 3.The sum of 4 consecutive numbers is 150. What is the smallest of them?
  4. 4.The sum of two numbers is 109 and their difference is 13. What is the smaller number?
  5. 5.The sum of 4 consecutive odd numbers is 104. What is the smallest of them?
  6. 6.One number is 5 times another. Their difference is 128. What is the smaller number?
  7. 7.The sum of 3 consecutive even numbers is 192. What is the smallest of them?
  8. 8.The sum of 3 consecutive numbers is 81. What is the largest of them?
  9. 9.The sum of 3 consecutive numbers is 144. What is the largest of them?
  10. 10.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 27. What is the number?
  11. 11.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?
  12. 12.The sum of 3 consecutive numbers is 180. What is the largest of them?
  13. 13.The sum of 3 consecutive numbers is 174. What is the largest of them?
  14. 14.The sum of 4 consecutive even numbers is 44. What is the smallest of them?
  15. 15.The sum of two numbers is 28 and their difference is 2. What is the smaller number?
  16. 16.The sum of 5 consecutive numbers is 120. What is the smallest of them?
  17. 17.The sum of 5 consecutive numbers is 145. What is the largest of them?
  18. 18.One number is 3 times another. Their difference is 64. What is the smaller number?
  19. 19.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 63. What is the number?
  20. 20.The sum of 4 consecutive odd numbers is 40. What is the largest of them?
  21. 21.The sum of two numbers is 89 and their difference is 69. What is the smaller number?
  22. 22.The sum of 3 consecutive odd numbers is 159. What is the smallest of them?
  23. 23.The sum of 4 consecutive numbers is 242. What is the largest of them?
  24. 24.The sum of 3 consecutive numbers is 177. What is the largest of them?
  25. 25.The sum of two numbers is 105 and their difference is 55. What is the smaller number?
  26. 26.The sum of 4 consecutive odd numbers is 304. What is the largest of them?
  27. 27.The sum of two numbers is 173 and their difference is 5. What is the larger number?
  28. 28.The sum of 3 consecutive numbers is 111. What is the largest of them?
  29. 29.The sum of two numbers is 76 and their difference is 14. What is the smaller number?
  30. 30.The sum of 4 consecutive even numbers is 124. What is the largest of them?
  31. 31.The sum of two numbers is 17 and their difference is 13. What is the larger number?
  32. 32.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?
  33. 33.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 54. What is the number?
  34. 34.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 9. What is the number?
  35. 35.The sum of 4 consecutive odd numbers is 112. What is the smallest of them?
  36. 36.The sum of two numbers is 24 and their difference is 16. What is the smaller number?
  37. 37.One number is 2 times another. Their difference is 13. What is the smaller number?
  38. 38.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?
  39. 39.The sum of two numbers is 140 and their difference is 26. What is the larger number?
  40. 40.The sum of two numbers is 114 and their difference is 32. What is the smaller number?

Answer key

  1. 18
  2. 31
  3. 36
  4. 48
  5. 23
  6. 32
  7. 62
  8. 28
  9. 49
  10. 47
  11. 79
  12. 61
  13. 59
  14. 8
  15. 13
  16. 22
  17. 31
  18. 32
  19. 18
  20. 13
  21. 10
  22. 51
  23. 62
  24. 60
  25. 25
  26. 79
  27. 89
  28. 38
  29. 31
  30. 34
  31. 15
  32. 58
  33. 28
  34. 56
  35. 25
  36. 4
  37. 13
  38. 89
  39. 83
  40. 41

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