← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 640 · 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 3 times another. Their difference is 58. What is the smaller number?
  2. 2.The sum of 3 consecutive even numbers is 126. What is the smallest of them?
  3. 3.The sum of two numbers is 76 and their difference is 26. What is the smaller number?
  4. 4.One number is 6 times another. Their difference is 140. What is the smaller number?
  5. 5.The sum of 4 consecutive even numbers is 228. What is the smallest of them?
  6. 6.The sum of 3 consecutive even numbers is 180. What is the smallest of them?
  7. 7.The digits of a two-digit number add up to 7. When the digits swap places, the number goes up by 45. What is the number?
  8. 8.The sum of two numbers is 24 and their difference is 2. What is the larger number?
  9. 9.The sum of 4 consecutive odd numbers is 48. What is the largest of them?
  10. 10.One number is 4 times another. Their difference is 39. What is the smaller number?
  11. 11.The sum of 5 consecutive numbers is 40. What is the largest of them?
  12. 12.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?
  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.One number is 6 times another. Their difference is 135. What is the smaller number?
  15. 15.One number is 3 times another. Their difference is 8. What is the smaller number?
  16. 16.The sum of two numbers is 16 and their difference is 12. What is the smaller number?
  17. 17.The sum of 3 consecutive numbers is 66. What is the smallest of them?
  18. 18.One number is 6 times another. Their difference is 45. What is the smaller number?
  19. 19.The sum of 4 consecutive odd numbers is 232. What is the largest of them?
  20. 20.The sum of 3 consecutive even numbers is 246. What is the smallest of them?
  21. 21.One number is 5 times another. Their difference is 24. What is the smaller number?
  22. 22.One number is 6 times another. Their difference is 175. What is the smaller number?
  23. 23.One number is 2 times another. Their difference is 16. What is the smaller number?
  24. 24.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?
  25. 25.One number is 5 times another. Their difference is 20. What is the smaller number?
  26. 26.One number is 2 times another. Their difference is 3. What is the smaller number?
  27. 27.The sum of 5 consecutive numbers is 145. What is the smallest of them?
  28. 28.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?
  29. 29.The sum of 3 consecutive even numbers is 144. What is the smallest of them?
  30. 30.The sum of two numbers is 92 and their difference is 82. What is the larger number?
  31. 31.The sum of 3 consecutive numbers is 99. What is the largest of them?
  32. 32.The sum of 3 consecutive numbers is 27. What is the largest of them?
  33. 33.One number is 3 times another. Their difference is 42. What is the smaller number?
  34. 34.One number is 6 times another. Their difference is 25. What is the smaller number?
  35. 35.The sum of two numbers is 87 and their difference is 13. What is the smaller number?
  36. 36.The sum of 4 consecutive numbers is 214. What is the largest of them?
  37. 37.One number is 6 times another. Their difference is 165. What is the smaller number?
  38. 38.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?
  39. 39.The sum of 3 consecutive numbers is 69. What is the smallest of them?
  40. 40.The sum of two numbers is 57 and their difference is 5. What is the smaller number?

Answer key

  1. 29
  2. 40
  3. 25
  4. 28
  5. 54
  6. 58
  7. 16
  8. 13
  9. 15
  10. 13
  11. 10
  12. 23
  13. 68
  14. 27
  15. 4
  16. 2
  17. 21
  18. 9
  19. 61
  20. 80
  21. 6
  22. 35
  23. 16
  24. 89
  25. 5
  26. 3
  27. 27
  28. 79
  29. 46
  30. 87
  31. 34
  32. 10
  33. 21
  34. 5
  35. 37
  36. 55
  37. 33
  38. 27
  39. 22
  40. 26

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