← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 117 · 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 10. When the digits swap places, the number goes up by 72. What is the number?
  2. 2.One number is 3 times another. Their difference is 6. What is the smaller number?
  3. 3.The sum of 4 consecutive even numbers is 308. What is the smallest of them?
  4. 4.The sum of 3 consecutive numbers is 78. What is the largest of them?
  5. 5.The sum of 5 consecutive numbers is 70. What is the smallest of them?
  6. 6.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?
  7. 7.The sum of 3 consecutive odd numbers is 123. What is the largest of them?
  8. 8.The sum of 3 consecutive numbers is 24. What is the largest of them?
  9. 9.The sum of two numbers is 93 and their difference is 83. What is the larger number?
  10. 10.The sum of 3 consecutive even numbers is 150. What is the largest of them?
  11. 11.One number is 2 times another. Their difference is 24. What is the smaller number?
  12. 12.The sum of two numbers is 55 and their difference is 47. What is the larger number?
  13. 13.The sum of 4 consecutive even numbers is 116. What is the smallest of them?
  14. 14.The sum of two numbers is 53 and their difference is 27. What is the smaller number?
  15. 15.One number is 5 times another. Their difference is 112. What is the smaller number?
  16. 16.The sum of 3 consecutive even numbers is 204. What is the largest of them?
  17. 17.The sum of 3 consecutive odd numbers is 183. What is the largest of them?
  18. 18.One number is 3 times another. Their difference is 20. What is the smaller number?
  19. 19.The sum of 4 consecutive numbers is 98. What is the largest of them?
  20. 20.The sum of 3 consecutive numbers is 177. What is the largest of them?
  21. 21.The sum of 3 consecutive numbers is 165. What is the smallest of them?
  22. 22.The sum of two numbers is 88 and their difference is 26. What is the larger number?
  23. 23.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?
  24. 24.One number is 5 times another. Their difference is 140. What is the smaller number?
  25. 25.The sum of 3 consecutive even numbers is 102. What is the smallest 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 9. What is the number?
  27. 27.One number is 6 times another. Their difference is 60. What is the smaller number?
  28. 28.The sum of 4 consecutive even numbers is 244. What is the smallest of them?
  29. 29.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?
  30. 30.The sum of 4 consecutive numbers is 66. What is the smallest of them?
  31. 31.The sum of 4 consecutive numbers is 166. What is the smallest of them?
  32. 32.The sum of 3 consecutive odd numbers is 99. What is the largest of them?
  33. 33.One number is 5 times another. Their difference is 20. What is the smaller number?
  34. 34.The sum of 3 consecutive numbers is 66. What is the smallest of them?
  35. 35.One number is 2 times another. Their difference is 16. What is the smaller number?
  36. 36.The sum of 4 consecutive odd numbers is 216. What is the smallest of them?
  37. 37.The sum of two numbers is 34 and their difference is 14. What is the larger number?
  38. 38.One number is 6 times another. Their difference is 40. What is the smaller number?
  39. 39.The sum of 4 consecutive even numbers is 316. What is the smallest of them?
  40. 40.The sum of two numbers is 29 and their difference is 13. What is the larger number?

Answer key

  1. 19
  2. 3
  3. 74
  4. 27
  5. 12
  6. 26
  7. 43
  8. 9
  9. 88
  10. 52
  11. 24
  12. 51
  13. 26
  14. 13
  15. 28
  16. 70
  17. 63
  18. 10
  19. 26
  20. 60
  21. 54
  22. 57
  23. 69
  24. 35
  25. 32
  26. 45
  27. 12
  28. 58
  29. 78
  30. 15
  31. 40
  32. 35
  33. 5
  34. 21
  35. 16
  36. 51
  37. 24
  38. 8
  39. 76
  40. 21

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