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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 361 · 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 134. What is the smallest of them?
  2. 2.The sum of two numbers is 25 and their difference is 3. What is the larger number?
  3. 3.The sum of 4 consecutive numbers is 130. What is the largest of them?
  4. 4.The sum of two numbers is 111 and their difference is 47. What is the smaller number?
  5. 5.One number is 4 times another. Their difference is 30. What is the smaller number?
  6. 6.The sum of 3 consecutive numbers is 42. What is the largest of them?
  7. 7.The sum of two numbers is 98 and their difference is 68. What is the larger number?
  8. 8.The sum of 5 consecutive numbers is 235. What is the largest of them?
  9. 9.The sum of 5 consecutive numbers is 150. What is the smallest of them?
  10. 10.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?
  11. 11.The sum of 5 consecutive numbers is 80. What is the smallest of them?
  12. 12.The sum of 4 consecutive odd numbers is 80. What is the smallest of them?
  13. 13.The sum of two numbers is 137 and their difference is 23. What is the smaller number?
  14. 14.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?
  15. 15.The sum of two numbers is 88 and their difference is 22. What is the smaller number?
  16. 16.The sum of two numbers is 82 and their difference is 52. What is the larger number?
  17. 17.One number is 5 times another. Their difference is 116. What is the smaller number?
  18. 18.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?
  19. 19.One number is 3 times another. Their difference is 18. What is the smaller number?
  20. 20.One number is 4 times another. Their difference is 108. What is the smaller number?
  21. 21.The sum of two numbers is 22 and their difference is 8. What is the smaller number?
  22. 22.The sum of 5 consecutive numbers is 45. What is the smallest of them?
  23. 23.The sum of 3 consecutive numbers is 114. What is the largest of them?
  24. 24.One number is 2 times another. Their difference is 13. What is the smaller number?
  25. 25.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?
  26. 26.The sum of two numbers is 69 and their difference is 3. What is the larger number?
  27. 27.The sum of 3 consecutive numbers is 177. What is the smallest of them?
  28. 28.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?
  29. 29.The sum of two numbers is 131 and their difference is 49. What is the larger number?
  30. 30.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?
  31. 31.The sum of two numbers is 121 and their difference is 33. What is the larger number?
  32. 32.One number is 2 times another. Their difference is 15. What is the smaller number?
  33. 33.The sum of two numbers is 75 and their difference is 55. What is the larger number?
  34. 34.One number is 5 times another. Their difference is 88. What is the smaller number?
  35. 35.The sum of 5 consecutive numbers is 35. What is the smallest of them?
  36. 36.The sum of two numbers is 145 and their difference is 35. What is the larger number?
  37. 37.The sum of 4 consecutive numbers is 78. What is the largest of them?
  38. 38.The sum of 4 consecutive even numbers is 52. What is the largest of them?
  39. 39.The sum of two numbers is 97 and their difference is 79. What is the smaller number?
  40. 40.The sum of 3 consecutive numbers is 141. What is the largest of them?

Answer key

  1. 32
  2. 14
  3. 34
  4. 32
  5. 10
  6. 15
  7. 83
  8. 49
  9. 28
  10. 19
  11. 14
  12. 17
  13. 57
  14. 67
  15. 33
  16. 67
  17. 29
  18. 78
  19. 9
  20. 36
  21. 7
  22. 7
  23. 39
  24. 13
  25. 13
  26. 36
  27. 58
  28. 56
  29. 90
  30. 14
  31. 77
  32. 15
  33. 65
  34. 22
  35. 5
  36. 90
  37. 21
  38. 16
  39. 9
  40. 48

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