← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 969 · 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 digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 54. What is the number?
  2. 2.One number is 4 times another. Their difference is 90. What is the smaller number?
  3. 3.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 9. What is the number?
  4. 4.One number is 2 times another. Their difference is 28. What is the smaller number?
  5. 5.The sum of 4 consecutive even numbers is 44. What is the smallest of them?
  6. 6.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?
  7. 7.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?
  8. 8.The sum of 4 consecutive numbers is 206. What is the smallest of them?
  9. 9.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?
  10. 10.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 36. What is the number?
  11. 11.The sum of 3 consecutive even numbers is 234. What is the largest of them?
  12. 12.The sum of 4 consecutive even numbers is 212. What is the smallest of them?
  13. 13.The sum of two numbers is 131 and their difference is 3. What is the smaller number?
  14. 14.One number is 3 times another. Their difference is 44. What is the smaller number?
  15. 15.The sum of two numbers is 38 and their difference is 10. What is the larger number?
  16. 16.The sum of 4 consecutive odd numbers is 128. What is the largest of them?
  17. 17.The sum of 4 consecutive odd numbers is 216. What is the largest of them?
  18. 18.The sum of 4 consecutive even numbers is 132. What is the smallest of them?
  19. 19.The sum of 4 consecutive even numbers is 156. What is the smallest of them?
  20. 20.One number is 5 times another. Their difference is 12. What is the smaller number?
  21. 21.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?
  22. 22.One number is 3 times another. Their difference is 46. What is the smaller number?
  23. 23.The sum of 4 consecutive odd numbers is 56. What is the smallest of them?
  24. 24.The sum of two numbers is 45 and their difference is 27. What is the larger number?
  25. 25.One number is 4 times another. Their difference is 69. What is the smaller number?
  26. 26.The sum of 3 consecutive even numbers is 30. What is the largest of them?
  27. 27.The sum of 3 consecutive numbers is 144. What is the smallest of them?
  28. 28.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?
  29. 29.The sum of 3 consecutive numbers is 108. What is the smallest of them?
  30. 30.The sum of 3 consecutive numbers is 42. What is the smallest of them?
  31. 31.The digits of a two-digit number add up to 6. When the digits swap places, the number goes up by 18. What is the number?
  32. 32.One number is 3 times another. Their difference is 80. What is the smaller number?
  33. 33.The sum of 4 consecutive even numbers is 164. What is the smallest of them?
  34. 34.One number is 3 times another. Their difference is 32. What is the smaller number?
  35. 35.The sum of two numbers is 136 and their difference is 24. What is the larger number?
  36. 36.One number is 5 times another. Their difference is 36. What is the smaller number?
  37. 37.The sum of two numbers is 127 and their difference is 55. What is the larger number?
  38. 38.The sum of 3 consecutive numbers is 51. What is the largest of them?
  39. 39.The sum of 4 consecutive numbers is 98. What is the smallest of them?
  40. 40.The sum of 5 consecutive numbers is 135. What is the smallest of them?

Answer key

  1. 39
  2. 30
  3. 45
  4. 28
  5. 8
  6. 68
  7. 89
  8. 50
  9. 27
  10. 26
  11. 80
  12. 50
  13. 64
  14. 22
  15. 24
  16. 35
  17. 57
  18. 30
  19. 36
  20. 3
  21. 36
  22. 23
  23. 11
  24. 36
  25. 23
  26. 12
  27. 47
  28. 47
  29. 35
  30. 13
  31. 24
  32. 40
  33. 38
  34. 16
  35. 80
  36. 9
  37. 91
  38. 18
  39. 23
  40. 25

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