← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 353 · 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 3 consecutive numbers is 87. What is the largest of them?
  2. 2.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?
  3. 3.One number is 2 times another. Their difference is 18. What is the smaller number?
  4. 4.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?
  5. 5.The sum of 3 consecutive even numbers is 96. What is the smallest of them?
  6. 6.The sum of 3 consecutive numbers is 105. What is the smallest of them?
  7. 7.The sum of 4 consecutive numbers is 66. What is the smallest of them?
  8. 8.The sum of two numbers is 13 and their difference is 9. What is the larger number?
  9. 9.The sum of 5 consecutive numbers is 235. What is the smallest of them?
  10. 10.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?
  11. 11.The sum of 4 consecutive odd numbers is 224. What is the smallest of them?
  12. 12.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?
  13. 13.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?
  14. 14.One number is 2 times another. Their difference is 38. What is the smaller number?
  15. 15.The sum of 4 consecutive numbers is 190. What is the smallest of them?
  16. 16.The sum of 4 consecutive numbers is 106. What is the smallest of them?
  17. 17.The sum of two numbers is 104 and their difference is 46. What is the smaller number?
  18. 18.The sum of 3 consecutive even numbers is 204. What is the largest of them?
  19. 19.The sum of 4 consecutive odd numbers is 240. What is the smallest of them?
  20. 20.The sum of 4 consecutive numbers is 26. What is the largest of them?
  21. 21.The sum of 3 consecutive even numbers is 24. What is the largest of them?
  22. 22.The sum of 3 consecutive even numbers is 36. What is the largest of them?
  23. 23.The sum of 3 consecutive numbers is 21. What is the largest of them?
  24. 24.The sum of two numbers is 29 and their difference is 5. What is the larger number?
  25. 25.One number is 2 times another. Their difference is 3. What is the smaller number?
  26. 26.One number is 3 times another. Their difference is 10. What is the smaller number?
  27. 27.The sum of 4 consecutive numbers is 70. What is the smallest of them?
  28. 28.One number is 5 times another. Their difference is 116. What is the smaller number?
  29. 29.One number is 2 times another. Their difference is 40. What is the smaller number?
  30. 30.The sum of 4 consecutive odd numbers is 120. What is the smallest of them?
  31. 31.The sum of two numbers is 125 and their difference is 7. What is the larger number?
  32. 32.One number is 6 times another. Their difference is 45. What is the smaller number?
  33. 33.The digits of a two-digit number add up to 13. When the digits swap places, the number goes up by 27. What is the number?
  34. 34.The sum of two numbers is 100 and their difference is 84. What is the larger number?
  35. 35.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?
  36. 36.One number is 6 times another. Their difference is 100. What is the smaller number?
  37. 37.The sum of 4 consecutive odd numbers is 168. What is the smallest of them?
  38. 38.The sum of 3 consecutive numbers is 54. What is the largest of them?
  39. 39.The sum of 4 consecutive even numbers is 212. What is the smallest of them?
  40. 40.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?

Answer key

  1. 30
  2. 19
  3. 18
  4. 16
  5. 30
  6. 34
  7. 15
  8. 11
  9. 45
  10. 49
  11. 53
  12. 78
  13. 36
  14. 38
  15. 46
  16. 25
  17. 29
  18. 70
  19. 57
  20. 8
  21. 10
  22. 14
  23. 8
  24. 17
  25. 3
  26. 5
  27. 16
  28. 29
  29. 40
  30. 27
  31. 66
  32. 9
  33. 58
  34. 92
  35. 68
  36. 20
  37. 39
  38. 19
  39. 50
  40. 89

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