← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 296 · 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 5 consecutive numbers is 170. What is the smallest of them?
  2. 2.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?
  3. 3.The sum of 4 consecutive numbers is 158. What is the largest of them?
  4. 4.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 63. What is the number?
  5. 5.One number is 5 times another. Their difference is 80. What is the smaller number?
  6. 6.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?
  7. 7.One number is 4 times another. Their difference is 57. What is the smaller number?
  8. 8.The sum of 3 consecutive numbers is 147. What is the largest of them?
  9. 9.The sum of 3 consecutive numbers is 123. What is the smallest of them?
  10. 10.The sum of two numbers is 16 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 72. What is the number?
  12. 12.The sum of two numbers is 96 and their difference is 76. What is the larger number?
  13. 13.The sum of two numbers is 138 and their difference is 28. What is the smaller number?
  14. 14.One number is 3 times another. Their difference is 20. What is the smaller number?
  15. 15.The sum of 4 consecutive numbers is 38. What is the smallest of them?
  16. 16.The sum of 4 consecutive numbers is 74. What is the largest of them?
  17. 17.The sum of 5 consecutive numbers is 105. What is the largest of them?
  18. 18.The sum of 4 consecutive even numbers is 172. What is the largest of them?
  19. 19.The sum of two numbers is 35 and their difference is 17. What is the larger number?
  20. 20.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?
  21. 21.The sum of 4 consecutive odd numbers is 48. What is the largest of them?
  22. 22.The sum of 4 consecutive numbers is 206. What is the smallest of them?
  23. 23.The sum of 3 consecutive numbers is 45. What is the smallest of them?
  24. 24.The sum of 5 consecutive numbers is 190. What is the largest of them?
  25. 25.The sum of two numbers is 70 and their difference is 68. What is the larger number?
  26. 26.The sum of 3 consecutive odd numbers is 57. What is the smallest of them?
  27. 27.The sum of 4 consecutive even numbers is 116. What is the largest of them?
  28. 28.The sum of 4 consecutive numbers is 238. What is the largest of them?
  29. 29.The sum of 4 consecutive numbers is 90. What is the largest of them?
  30. 30.The sum of two numbers is 33 and their difference is 29. What is the smaller number?
  31. 31.The sum of 4 consecutive even numbers is 188. What is the largest of them?
  32. 32.The sum of 5 consecutive numbers is 120. What is the smallest of them?
  33. 33.The sum of two numbers is 54 and their difference is 28. What is the larger number?
  34. 34.The sum of 3 consecutive numbers is 75. What is the smallest of them?
  35. 35.One number is 5 times another. Their difference is 148. What is the smaller number?
  36. 36.The sum of 3 consecutive numbers is 150. What is the largest of them?
  37. 37.The sum of 3 consecutive numbers is 18. What is the smallest of them?
  38. 38.The sum of 3 consecutive odd numbers is 135. What is the smallest of them?
  39. 39.The sum of 5 consecutive numbers is 85. What is the smallest of them?
  40. 40.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?

Answer key

  1. 32
  2. 89
  3. 41
  4. 29
  5. 20
  6. 47
  7. 19
  8. 50
  9. 40
  10. 2
  11. 19
  12. 86
  13. 55
  14. 10
  15. 8
  16. 20
  17. 23
  18. 46
  19. 26
  20. 26
  21. 15
  22. 50
  23. 14
  24. 40
  25. 69
  26. 17
  27. 32
  28. 61
  29. 24
  30. 2
  31. 50
  32. 22
  33. 41
  34. 24
  35. 37
  36. 51
  37. 5
  38. 43
  39. 15
  40. 36

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