← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 17 · 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 120. What is the smaller number?
  2. 2.The sum of two numbers is 99 and their difference is 37. What is the larger number?
  3. 3.The sum of two numbers is 139 and their difference is 9. What is the larger number?
  4. 4.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 36. What is the number?
  5. 5.The sum of 3 consecutive even numbers is 30. What is the smallest of them?
  6. 6.The sum of 5 consecutive numbers is 35. What is the largest of them?
  7. 7.One number is 2 times another. Their difference is 10. What is the smaller number?
  8. 8.The sum of 4 consecutive odd numbers is 312. What is the largest of them?
  9. 9.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?
  10. 10.The sum of 4 consecutive even numbers is 124. What is the smallest of them?
  11. 11.The sum of 4 consecutive numbers is 158. What is the largest of them?
  12. 12.The sum of two numbers is 27 and their difference is 1. What is the smaller number?
  13. 13.One number is 4 times another. Their difference is 9. What is the smaller number?
  14. 14.The sum of 5 consecutive numbers is 285. What is the smallest of them?
  15. 15.The sum of two numbers is 131 and their difference is 67. What is the larger number?
  16. 16.The sum of 4 consecutive numbers is 226. What is the largest of them?
  17. 17.One number is 2 times another. Their difference is 31. What is the smaller number?
  18. 18.The sum of 4 consecutive odd numbers is 120. What is the largest of them?
  19. 19.The sum of two numbers is 35 and their difference is 7. What is the smaller number?
  20. 20.The sum of two numbers is 80 and their difference is 56. What is the smaller number?
  21. 21.The sum of 4 consecutive even numbers is 108. What is the smallest of them?
  22. 22.The sum of 3 consecutive even numbers is 186. What is the smallest of them?
  23. 23.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?
  24. 24.The sum of 4 consecutive odd numbers is 72. What is the smallest of them?
  25. 25.The sum of 4 consecutive odd numbers is 176. What is the largest of them?
  26. 26.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 27. What is the number?
  27. 27.The sum of 4 consecutive numbers is 142. What is the smallest of them?
  28. 28.The sum of 3 consecutive odd numbers is 207. What is the largest of them?
  29. 29.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 63. What is the number?
  30. 30.The sum of 3 consecutive numbers is 162. What is the largest of them?
  31. 31.The sum of 3 consecutive numbers is 60. What is the smallest of them?
  32. 32.The sum of 3 consecutive numbers is 72. What is the smallest of them?
  33. 33.The sum of 4 consecutive even numbers is 180. What is the largest of them?
  34. 34.The sum of 4 consecutive odd numbers is 248. What is the smallest of them?
  35. 35.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?
  36. 36.The sum of 5 consecutive numbers is 65. What is the largest of them?
  37. 37.The sum of two numbers is 42 and their difference is 12. What is the larger number?
  38. 38.One number is 4 times another. Their difference is 111. What is the smaller number?
  39. 39.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 18. What is the number?
  40. 40.The sum of 3 consecutive numbers is 180. What is the smallest of them?

Answer key

  1. 40
  2. 68
  3. 74
  4. 37
  5. 8
  6. 9
  7. 10
  8. 81
  9. 78
  10. 28
  11. 41
  12. 13
  13. 3
  14. 55
  15. 99
  16. 58
  17. 31
  18. 33
  19. 14
  20. 12
  21. 24
  22. 60
  23. 27
  24. 15
  25. 47
  26. 36
  27. 34
  28. 71
  29. 29
  30. 55
  31. 19
  32. 23
  33. 48
  34. 59
  35. 89
  36. 15
  37. 27
  38. 37
  39. 35
  40. 59

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