← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 558 · 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 4 times another. Their difference is 15. What is the smaller number?
  2. 2.One number is 6 times another. Their difference is 160. What is the smaller number?
  3. 3.The digits of a two-digit number add up to 3. When the digits swap places, the number goes up by 9. What is the number?
  4. 4.One number is 5 times another. Their difference is 80. What is the smaller number?
  5. 5.The sum of two numbers is 59 and their difference is 17. What is the smaller number?
  6. 6.The sum of 3 consecutive numbers is 24. What is the smallest of them?
  7. 7.One number is 2 times another. Their difference is 35. What is the smaller number?
  8. 8.The sum of 3 consecutive odd numbers is 135. What is the smallest of them?
  9. 9.The sum of 3 consecutive numbers is 183. What is the smallest of them?
  10. 10.The sum of two numbers is 66 and their difference is 48. What is the larger number?
  11. 11.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 18. What is the number?
  12. 12.The sum of 4 consecutive even numbers is 324. What is the smallest of them?
  13. 13.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?
  14. 14.The sum of 3 consecutive odd numbers is 87. What is the smallest of them?
  15. 15.One number is 3 times another. Their difference is 66. What is the smaller number?
  16. 16.One number is 6 times another. Their difference is 190. What is the smaller number?
  17. 17.The sum of 4 consecutive numbers is 114. What is the smallest of them?
  18. 18.One number is 3 times another. Their difference is 58. What is the smaller number?
  19. 19.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?
  20. 20.One number is 5 times another. Their difference is 152. What is the smaller number?
  21. 21.The sum of two numbers is 29 and their difference is 23. What is the larger number?
  22. 22.The sum of two numbers is 94 and their difference is 68. What is the larger number?
  23. 23.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 54. What is the number?
  24. 24.The sum of 5 consecutive numbers is 235. What is the smallest of them?
  25. 25.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?
  26. 26.The sum of 3 consecutive numbers is 141. What is the largest of them?
  27. 27.The sum of 4 consecutive odd numbers is 64. What is the largest of them?
  28. 28.The sum of 4 consecutive odd numbers is 272. What is the smallest of them?
  29. 29.One number is 2 times another. Their difference is 28. What is the smaller number?
  30. 30.The sum of 3 consecutive odd numbers is 57. What is the smallest of them?
  31. 31.The sum of 3 consecutive odd numbers is 45. What is the largest of them?
  32. 32.One number is 5 times another. Their difference is 28. What is the smaller number?
  33. 33.The sum of two numbers is 111 and their difference is 31. What is the smaller number?
  34. 34.The sum of 3 consecutive odd numbers is 225. What is the smallest of them?
  35. 35.The sum of 3 consecutive numbers is 177. What is the largest of them?
  36. 36.The sum of 5 consecutive numbers is 85. What is the smallest of them?
  37. 37.The sum of 5 consecutive numbers is 150. What is the smallest of them?
  38. 38.The sum of two numbers is 95 and their difference is 21. What is the smaller number?
  39. 39.The sum of 3 consecutive numbers is 180. What is the largest of them?
  40. 40.The sum of two numbers is 50 and their difference is 22. What is the larger number?

Answer key

  1. 5
  2. 32
  3. 12
  4. 20
  5. 21
  6. 7
  7. 35
  8. 43
  9. 60
  10. 57
  11. 57
  12. 78
  13. 68
  14. 27
  15. 33
  16. 38
  17. 27
  18. 29
  19. 78
  20. 38
  21. 26
  22. 81
  23. 17
  24. 45
  25. 89
  26. 48
  27. 19
  28. 65
  29. 28
  30. 17
  31. 17
  32. 7
  33. 40
  34. 73
  35. 60
  36. 15
  37. 28
  38. 37
  39. 61
  40. 36

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