← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 90 · 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 3 consecutive odd numbers is 123. What is the smallest of them?
  2. 2.The sum of 5 consecutive numbers is 185. What is the smallest of them?
  3. 3.The sum of two numbers is 35 and their difference is 25. What is the larger number?
  4. 4.The sum of two numbers is 152 and their difference is 40. What is the larger number?
  5. 5.The sum of 3 consecutive even numbers is 108. What is the smallest of them?
  6. 6.The sum of two numbers is 91 and their difference is 85. What is the smaller number?
  7. 7.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 45. What is the number?
  8. 8.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?
  9. 9.The sum of two numbers is 76 and their difference is 34. What is the smaller number?
  10. 10.The sum of two numbers is 171 and their difference is 19. What is the smaller number?
  11. 11.One number is 4 times another. Their difference is 48. What is the smaller number?
  12. 12.The sum of 4 consecutive even numbers is 68. What is the smallest of them?
  13. 13.The sum of 3 consecutive even numbers is 78. What is the largest of them?
  14. 14.The sum of 3 consecutive numbers is 45. What is the smallest of them?
  15. 15.The sum of 4 consecutive odd numbers is 168. What is the largest of them?
  16. 16.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?
  17. 17.The sum of 3 consecutive numbers is 18. What is the largest of them?
  18. 18.The sum of 3 consecutive numbers is 111. What is the largest of them?
  19. 19.The sum of two numbers is 77 and their difference is 75. What is the smaller number?
  20. 20.The sum of two numbers is 29 and their difference is 11. What is the larger number?
  21. 21.The sum of two numbers is 17 and their difference is 9. What is the larger number?
  22. 22.The sum of two numbers is 49 and their difference is 7. What is the smaller number?
  23. 23.The sum of 4 consecutive odd numbers is 296. What is the smallest of them?
  24. 24.The sum of 4 consecutive odd numbers is 224. What is the smallest of them?
  25. 25.One number is 2 times another. Their difference is 25. What is the smaller number?
  26. 26.The sum of 3 consecutive odd numbers is 147. What is the smallest of them?
  27. 27.The sum of two numbers is 46 and their difference is 4. What is the larger number?
  28. 28.One number is 6 times another. Their difference is 140. What is the smaller number?
  29. 29.The sum of two numbers is 34 and their difference is 24. What is the smaller number?
  30. 30.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?
  31. 31.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 63. What is the number?
  32. 32.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?
  33. 33.The sum of two numbers is 40 and their difference is 2. What is the smaller number?
  34. 34.One number is 5 times another. Their difference is 48. What is the smaller number?
  35. 35.The sum of 4 consecutive numbers is 154. What is the smallest of them?
  36. 36.The sum of 4 consecutive numbers is 174. What is the smallest of them?
  37. 37.The sum of 4 consecutive numbers is 98. What is the smallest of them?
  38. 38.The sum of two numbers is 63 and their difference is 11. What is the smaller number?
  39. 39.The sum of 4 consecutive odd numbers is 144. What is the smallest of them?
  40. 40.The sum of two numbers is 32 and their difference is 10. What is the larger number?

Answer key

  1. 39
  2. 35
  3. 30
  4. 96
  5. 34
  6. 3
  7. 38
  8. 89
  9. 21
  10. 76
  11. 16
  12. 14
  13. 28
  14. 14
  15. 45
  16. 78
  17. 7
  18. 38
  19. 1
  20. 20
  21. 13
  22. 21
  23. 71
  24. 53
  25. 25
  26. 47
  27. 25
  28. 28
  29. 5
  30. 46
  31. 18
  32. 49
  33. 19
  34. 12
  35. 37
  36. 42
  37. 23
  38. 26
  39. 33
  40. 21

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