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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 206 · 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 115. What is the largest of them?
  2. 2.The sum of 3 consecutive numbers is 30. What is the smallest of them?
  3. 3.One number is 4 times another. Their difference is 18. What is the smaller number?
  4. 4.The sum of 3 consecutive numbers is 81. What is the largest of them?
  5. 5.The sum of two numbers is 126 and their difference is 12. What is the smaller number?
  6. 6.One number is 5 times another. Their difference is 140. What is the smaller number?
  7. 7.One number is 5 times another. Their difference is 64. What is the smaller number?
  8. 8.The sum of 3 consecutive odd numbers is 69. What is the smallest of them?
  9. 9.The sum of two numbers is 140 and their difference is 20. What is the larger number?
  10. 10.The sum of 4 consecutive odd numbers is 336. What is the smallest of them?
  11. 11.The sum of two numbers is 16 and their difference is 12. What is the larger number?
  12. 12.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?
  13. 13.The sum of 3 consecutive odd numbers is 93. What is the largest of them?
  14. 14.The sum of two numbers is 113 and their difference is 7. What is the smaller number?
  15. 15.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?
  16. 16.The sum of two numbers is 58 and their difference is 10. What is the smaller number?
  17. 17.One number is 4 times another. Their difference is 87. What is the smaller number?
  18. 18.The sum of 3 consecutive numbers is 120. What is the smallest of them?
  19. 19.The sum of 4 consecutive odd numbers is 192. What is the largest of them?
  20. 20.The sum of two numbers is 95 and their difference is 43. What is the smaller number?
  21. 21.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?
  22. 22.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 18. What is the number?
  23. 23.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?
  24. 24.The sum of two numbers is 119 and their difference is 51. What is the larger number?
  25. 25.One number is 2 times another. Their difference is 26. What is the smaller number?
  26. 26.The sum of two numbers is 79 and their difference is 75. What is the larger number?
  27. 27.The sum of 4 consecutive even numbers is 180. What is the smallest of them?
  28. 28.One number is 5 times another. Their difference is 84. What is the smaller number?
  29. 29.The sum of two numbers is 23 and their difference is 17. What is the larger number?
  30. 30.The sum of 3 consecutive numbers is 30. What is the largest of them?
  31. 31.The sum of two numbers is 102 and their difference is 82. What is the larger number?
  32. 32.The sum of 4 consecutive odd numbers is 104. What is the smallest of them?
  33. 33.The sum of two numbers is 27 and their difference is 15. What is the smaller number?
  34. 34.The sum of two numbers is 15 and their difference is 9. What is the larger number?
  35. 35.The sum of 5 consecutive numbers is 110. What is the largest of them?
  36. 36.The sum of two numbers is 87 and their difference is 81. What is the larger number?
  37. 37.The sum of 3 consecutive even numbers is 66. What is the largest of them?
  38. 38.One number is 2 times another. Their difference is 14. What is the smaller number?
  39. 39.One number is 3 times another. Their difference is 20. What is the smaller number?
  40. 40.The sum of 4 consecutive numbers is 218. What is the largest of them?

Answer key

  1. 25
  2. 9
  3. 6
  4. 28
  5. 57
  6. 35
  7. 16
  8. 21
  9. 80
  10. 81
  11. 14
  12. 68
  13. 33
  14. 53
  15. 39
  16. 24
  17. 29
  18. 39
  19. 51
  20. 26
  21. 67
  22. 57
  23. 46
  24. 85
  25. 26
  26. 77
  27. 42
  28. 21
  29. 20
  30. 11
  31. 92
  32. 23
  33. 6
  34. 12
  35. 24
  36. 84
  37. 24
  38. 14
  39. 10
  40. 56

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