← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 605 · 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 even numbers is 52. What is the smallest of them?
  2. 2.The sum of 3 consecutive numbers is 111. What is the smallest of them?
  3. 3.The sum of two numbers is 71 and their difference is 43. What is the larger number?
  4. 4.The sum of 3 consecutive numbers is 45. What is the smallest of them?
  5. 5.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 54. What is the number?
  6. 6.The sum of two numbers is 146 and their difference is 44. What is the smaller number?
  7. 7.The sum of 3 consecutive odd numbers is 147. What is the largest of them?
  8. 8.The sum of 3 consecutive numbers is 96. What is the smallest of them?
  9. 9.One number is 3 times another. Their difference is 10. What is the smaller number?
  10. 10.The sum of 4 consecutive numbers is 86. What is the smallest of them?
  11. 11.The sum of 5 consecutive numbers is 265. What is the smallest of them?
  12. 12.The digits of a two-digit number add up to 6. When the digits swap places, the number goes up by 18. What is the number?
  13. 13.The sum of 3 consecutive numbers is 66. What is the smallest of them?
  14. 14.One number is 3 times another. Their difference is 16. What is the smaller number?
  15. 15.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?
  16. 16.The sum of 3 consecutive numbers is 108. What is the smallest of them?
  17. 17.The sum of 3 consecutive numbers is 183. What is the smallest of them?
  18. 18.The sum of 3 consecutive odd numbers is 213. What is the smallest of them?
  19. 19.The sum of 4 consecutive even numbers is 244. What is the largest of them?
  20. 20.The sum of 5 consecutive numbers is 230. What is the smallest of them?
  21. 21.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?
  22. 22.The sum of 4 consecutive numbers is 194. What is the smallest of them?
  23. 23.The sum of 4 consecutive numbers is 70. What is the smallest of them?
  24. 24.One number is 4 times another. Their difference is 45. What is the smaller number?
  25. 25.The sum of two numbers is 98 and their difference is 22. What is the smaller number?
  26. 26.One number is 5 times another. Their difference is 84. What is the smaller number?
  27. 27.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 9. What is the number?
  28. 28.The sum of 3 consecutive numbers is 81. What is the largest of them?
  29. 29.The sum of 3 consecutive numbers is 132. What is the largest of them?
  30. 30.The sum of 5 consecutive numbers is 150. What is the largest of them?
  31. 31.The sum of 5 consecutive numbers is 275. What is the largest of them?
  32. 32.The sum of 4 consecutive even numbers is 52. What is the largest of them?
  33. 33.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?
  34. 34.One number is 2 times another. Their difference is 39. What is the smaller number?
  35. 35.The digits of a two-digit number add up to 5. When the digits swap places, the number goes up by 27. What is the number?
  36. 36.The sum of 4 consecutive numbers is 38. What is the largest of them?
  37. 37.The sum of two numbers is 46 and their difference is 10. What is the smaller number?
  38. 38.The sum of 3 consecutive odd numbers is 63. What is the largest of them?
  39. 39.One number is 5 times another. Their difference is 132. What is the smaller number?
  40. 40.The sum of two numbers is 31 and their difference is 23. What is the larger number?

Answer key

  1. 10
  2. 36
  3. 57
  4. 14
  5. 39
  6. 51
  7. 51
  8. 31
  9. 5
  10. 20
  11. 51
  12. 24
  13. 21
  14. 8
  15. 15
  16. 35
  17. 60
  18. 69
  19. 64
  20. 44
  21. 13
  22. 47
  23. 16
  24. 15
  25. 38
  26. 21
  27. 56
  28. 28
  29. 45
  30. 32
  31. 57
  32. 16
  33. 67
  34. 39
  35. 14
  36. 11
  37. 18
  38. 23
  39. 33
  40. 27

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