← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 249 · 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 sum of 5 consecutive numbers is 80. What is the smallest of them?
  2. 2.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?
  3. 3.One number is 5 times another. Their difference is 160. What is the smaller number?
  4. 4.One number is 5 times another. Their difference is 32. What is the smaller number?
  5. 5.The sum of 5 consecutive numbers is 205. What is the largest of them?
  6. 6.The sum of 4 consecutive even numbers is 188. What is the smallest of them?
  7. 7.The sum of 3 consecutive odd numbers is 165. What is the largest of them?
  8. 8.The sum of 3 consecutive numbers is 177. What is the smallest of them?
  9. 9.One number is 3 times another. Their difference is 56. What is the smaller number?
  10. 10.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 18. What is the number?
  11. 11.The sum of two numbers is 164 and their difference is 28. What is the smaller number?
  12. 12.The sum of 5 consecutive numbers is 40. What is the largest of them?
  13. 13.The sum of two numbers is 87 and their difference is 79. What is the smaller number?
  14. 14.One number is 3 times another. Their difference is 8. What is the smaller number?
  15. 15.The sum of two numbers is 60 and their difference is 48. What is the larger number?
  16. 16.One number is 2 times another. Their difference is 10. What is the smaller number?
  17. 17.The sum of 3 consecutive odd numbers is 99. What is the largest of them?
  18. 18.The sum of 3 consecutive numbers is 153. What is the largest of them?
  19. 19.One number is 2 times another. Their difference is 24. What is the smaller number?
  20. 20.The sum of 3 consecutive even numbers is 192. What is the largest of them?
  21. 21.The sum of 3 consecutive odd numbers is 153. What is the largest of them?
  22. 22.One number is 6 times another. Their difference is 100. What is the smaller number?
  23. 23.The digits of a two-digit number add up to 5. When the digits swap places, the number goes up by 9. What is the number?
  24. 24.One number is 4 times another. Their difference is 111. What is the smaller number?
  25. 25.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?
  26. 26.The sum of two numbers is 67 and their difference is 57. What is the larger number?
  27. 27.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 36. What is the number?
  28. 28.The sum of 3 consecutive odd numbers is 63. What is the smallest of them?
  29. 29.The sum of 4 consecutive odd numbers is 304. What is the largest of them?
  30. 30.The digits of a two-digit number add up to 6. When the digits swap places, the number goes up by 36. What is the number?
  31. 31.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?
  32. 32.The sum of two numbers is 56 and their difference is 14. What is the smaller number?
  33. 33.One number is 6 times another. Their difference is 85. 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 18. What is the number?
  35. 35.The sum of 4 consecutive numbers is 26. What is the smallest of them?
  36. 36.The sum of two numbers is 128 and their difference is 8. What is the smaller number?
  37. 37.One number is 3 times another. Their difference is 80. What is the smaller number?
  38. 38.The sum of 3 consecutive even numbers is 126. What is the smallest of them?
  39. 39.The sum of 3 consecutive odd numbers is 57. What is the smallest of them?
  40. 40.The sum of two numbers is 104 and their difference is 30. What is the smaller number?

Answer key

  1. 14
  2. 89
  3. 40
  4. 8
  5. 43
  6. 44
  7. 57
  8. 58
  9. 28
  10. 46
  11. 68
  12. 10
  13. 4
  14. 4
  15. 54
  16. 10
  17. 35
  18. 52
  19. 24
  20. 66
  21. 53
  22. 20
  23. 23
  24. 37
  25. 67
  26. 62
  27. 48
  28. 19
  29. 79
  30. 15
  31. 49
  32. 21
  33. 17
  34. 68
  35. 5
  36. 60
  37. 40
  38. 40
  39. 17
  40. 37

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