← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 217 · 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 4 consecutive numbers is 130. What is the smallest of them?
  2. 2.One number is 5 times another. Their difference is 28. What is the smaller number?
  3. 3.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?
  4. 4.The sum of two numbers is 27 and their difference is 1. What is the smaller number?
  5. 5.The sum of two numbers is 78 and their difference is 16. What is the smaller number?
  6. 6.The sum of two numbers is 68 and their difference is 2. What is the smaller number?
  7. 7.The sum of 3 consecutive numbers is 141. What is the smallest of them?
  8. 8.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?
  9. 9.The sum of 4 consecutive even numbers is 308. What is the largest of them?
  10. 10.The sum of 4 consecutive numbers is 74. What is the smallest of them?
  11. 11.The sum of two numbers is 73 and their difference is 15. What is the smaller number?
  12. 12.The sum of 5 consecutive numbers is 45. What is the smallest of them?
  13. 13.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?
  14. 14.The sum of 3 consecutive numbers is 63. What is the smallest of them?
  15. 15.The sum of 3 consecutive even numbers is 192. What is the smallest of them?
  16. 16.The sum of 5 consecutive numbers is 260. What is the largest of them?
  17. 17.The sum of 4 consecutive odd numbers is 96. What is the smallest of them?
  18. 18.The digits of a two-digit number add up to 6. When the digits swap places, the number goes up by 36. What is the number?
  19. 19.The sum of two numbers is 106 and their difference is 14. What is the smaller number?
  20. 20.The sum of 3 consecutive even numbers is 24. What is the smallest of them?
  21. 21.The sum of two numbers is 71 and their difference is 21. What is the larger number?
  22. 22.The sum of two numbers is 98 and their difference is 74. What is the larger number?
  23. 23.One number is 3 times another. Their difference is 62. What is the smaller number?
  24. 24.One number is 4 times another. Their difference is 33. What is the smaller number?
  25. 25.The sum of 3 consecutive even numbers is 90. What is the largest of them?
  26. 26.The sum of two numbers is 140 and their difference is 58. What is the smaller number?
  27. 27.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?
  28. 28.The sum of two numbers is 164 and their difference is 20. What is the larger number?
  29. 29.The sum of two numbers is 56 and their difference is 10. What is the larger number?
  30. 30.The sum of two numbers is 59 and their difference is 39. What is the smaller number?
  31. 31.One number is 3 times another. Their difference is 46. What is the smaller number?
  32. 32.The sum of two numbers is 186 and their difference is 2. What is the larger number?
  33. 33.The sum of 3 consecutive numbers is 117. What is the smallest of them?
  34. 34.The sum of 4 consecutive even numbers is 236. What is the smallest of them?
  35. 35.The sum of 3 consecutive numbers is 42. What is the smallest of them?
  36. 36.The sum of two numbers is 55 and their difference is 3. What is the larger number?
  37. 37.The sum of two numbers is 58 and their difference is 8. What is the smaller number?
  38. 38.One number is 2 times another. Their difference is 17. What is the smaller number?
  39. 39.The sum of 4 consecutive even numbers is 92. What is the largest of them?
  40. 40.One number is 5 times another. Their difference is 92. What is the smaller number?

Answer key

  1. 31
  2. 7
  3. 34
  4. 13
  5. 31
  6. 33
  7. 46
  8. 49
  9. 80
  10. 17
  11. 29
  12. 7
  13. 68
  14. 20
  15. 62
  16. 54
  17. 21
  18. 15
  19. 46
  20. 6
  21. 46
  22. 86
  23. 31
  24. 11
  25. 32
  26. 41
  27. 58
  28. 92
  29. 33
  30. 10
  31. 23
  32. 94
  33. 38
  34. 56
  35. 13
  36. 29
  37. 25
  38. 17
  39. 26
  40. 23

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