← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 115 · 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 6. When the digits swap places, the number goes up by 18. What is the number?
  2. 2.The sum of two numbers is 162 and their difference is 2. What is the larger number?
  3. 3.The sum of 4 consecutive odd numbers is 152. What is the largest of them?
  4. 4.One number is 4 times another. Their difference is 60. What is the smaller number?
  5. 5.The sum of two numbers is 56 and their difference is 14. What is the larger number?
  6. 6.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?
  7. 7.The sum of 3 consecutive odd numbers is 87. What is the smallest of them?
  8. 8.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?
  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.One number is 5 times another. Their difference is 140. What is the smaller number?
  11. 11.One number is 4 times another. Their difference is 36. What is the smaller number?
  12. 12.The sum of two numbers is 33 and their difference is 1. What is the larger number?
  13. 13.The sum of 4 consecutive numbers is 86. What is the largest of them?
  14. 14.The sum of two numbers is 23 and their difference is 13. What is the smaller number?
  15. 15.The sum of two numbers is 34 and their difference is 16. What is the smaller number?
  16. 16.The digits of a two-digit number add up to 15. When the digits swap places, the number goes up by 27. What is the number?
  17. 17.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 45. What is the number?
  18. 18.The sum of 5 consecutive numbers is 35. What is the largest of them?
  19. 19.One number is 2 times another. Their difference is 17. What is the smaller number?
  20. 20.The digits of a two-digit number add up to 4. When the digits swap places, the number goes up by 18. What is the number?
  21. 21.The sum of 3 consecutive odd numbers is 75. What is the smallest of them?
  22. 22.The sum of two numbers is 95 and their difference is 47. What is the larger number?
  23. 23.The sum of two numbers is 85 and their difference is 73. What is the smaller number?
  24. 24.The sum of 4 consecutive odd numbers is 256. What is the smallest of them?
  25. 25.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 72. What is the number?
  26. 26.One number is 5 times another. Their difference is 148. What is the smaller number?
  27. 27.The sum of 4 consecutive odd numbers is 312. What is the smallest of them?
  28. 28.The sum of two numbers is 53 and their difference is 11. What is the larger number?
  29. 29.The sum of 5 consecutive numbers is 90. What is the smallest of them?
  30. 30.The sum of two numbers is 26 and their difference is 6. What is the larger number?
  31. 31.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?
  32. 32.The sum of 4 consecutive odd numbers is 176. What is the smallest of them?
  33. 33.The sum of 4 consecutive numbers is 174. What is the largest of them?
  34. 34.The sum of 5 consecutive numbers is 140. What is the largest of them?
  35. 35.The sum of two numbers is 131 and their difference is 19. What is the larger number?
  36. 36.One number is 3 times another. Their difference is 80. What is the smaller number?
  37. 37.One number is 2 times another. Their difference is 11. What is the smaller number?
  38. 38.The digits of a two-digit number add up to 14. When the digits swap places, the number goes up by 36. What is the number?
  39. 39.The sum of 4 consecutive even numbers is 244. What is the smallest of them?
  40. 40.The sum of two numbers is 116 and their difference is 16. What is the larger number?

Answer key

  1. 24
  2. 82
  3. 41
  4. 20
  5. 35
  6. 89
  7. 27
  8. 16
  9. 78
  10. 35
  11. 12
  12. 17
  13. 23
  14. 5
  15. 9
  16. 69
  17. 38
  18. 9
  19. 17
  20. 13
  21. 23
  22. 71
  23. 6
  24. 61
  25. 19
  26. 37
  27. 75
  28. 32
  29. 16
  30. 16
  31. 47
  32. 41
  33. 45
  34. 30
  35. 75
  36. 40
  37. 11
  38. 59
  39. 58
  40. 66

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