← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 512 · 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 14. What is the smaller number?
  2. 2.The sum of 3 consecutive numbers is 63. What is the smallest of them?
  3. 3.One number is 2 times another. Their difference is 29. What is the smaller number?
  4. 4.The sum of 3 consecutive odd numbers is 159. What is the largest of them?
  5. 5.The sum of 4 consecutive numbers is 230. What is the smallest of them?
  6. 6.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?
  7. 7.The sum of 4 consecutive numbers is 166. What is the smallest of them?
  8. 8.The sum of 3 consecutive even numbers is 78. What is the largest of them?
  9. 9.The sum of 4 consecutive even numbers is 132. What is the smallest of them?
  10. 10.The sum of two numbers is 92 and their difference is 12. What is the smaller number?
  11. 11.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 18. What is the number?
  12. 12.The sum of 4 consecutive even numbers is 44. What is the largest of them?
  13. 13.One number is 3 times another. Their difference is 68. What is the smaller number?
  14. 14.The sum of 3 consecutive numbers is 33. What is the smallest of them?
  15. 15.The digits of a two-digit number add up to 7. When the digits swap places, the number goes up by 9. What is the number?
  16. 16.The sum of two numbers is 117 and their difference is 41. What is the smaller number?
  17. 17.The digits of a two-digit number add up to 13. When the digits swap places, the number goes up by 9. What is the number?
  18. 18.The sum of two numbers is 65 and their difference is 37. What is the larger number?
  19. 19.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?
  20. 20.The sum of 3 consecutive odd numbers is 153. What is the smallest of them?
  21. 21.The sum of 4 consecutive numbers is 190. What is the smallest of them?
  22. 22.The sum of two numbers is 71 and their difference is 29. What is the larger number?
  23. 23.The sum of two numbers is 54 and their difference is 10. What is the larger number?
  24. 24.The sum of two numbers is 14 and their difference is 6. What is the smaller number?
  25. 25.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?
  26. 26.The sum of 4 consecutive odd numbers is 144. What is the smallest of them?
  27. 27.The sum of two numbers is 169 and their difference is 7. What is the larger number?
  28. 28.The sum of two numbers is 30 and their difference is 2. What is the smaller number?
  29. 29.The sum of 4 consecutive even numbers is 188. What is the largest of them?
  30. 30.The sum of two numbers is 94 and their difference is 32. What is the larger number?
  31. 31.The sum of two numbers is 26 and their difference is 2. What is the smaller number?
  32. 32.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?
  33. 33.The sum of 5 consecutive numbers is 35. What is the smallest of them?
  34. 34.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?
  35. 35.One number is 3 times another. Their difference is 12. What is the smaller number?
  36. 36.The sum of two numbers is 25 and their difference is 13. What is the larger number?
  37. 37.The sum of two numbers is 133 and their difference is 3. What is the smaller number?
  38. 38.The sum of two numbers is 21 and their difference is 5. What is the smaller number?
  39. 39.The sum of 3 consecutive numbers is 153. What is the largest of them?
  40. 40.The sum of two numbers is 102 and their difference is 58. What is the smaller number?

Answer key

  1. 7
  2. 20
  3. 29
  4. 55
  5. 56
  6. 78
  7. 40
  8. 28
  9. 30
  10. 40
  11. 46
  12. 14
  13. 34
  14. 10
  15. 34
  16. 38
  17. 67
  18. 51
  19. 79
  20. 49
  21. 46
  22. 50
  23. 32
  24. 4
  25. 13
  26. 33
  27. 88
  28. 14
  29. 50
  30. 63
  31. 12
  32. 35
  33. 5
  34. 68
  35. 6
  36. 19
  37. 65
  38. 8
  39. 52
  40. 22

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