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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 528 · 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.One number is 2 times another. Their difference is 23. What is the smaller number?
  2. 2.The sum of 5 consecutive numbers is 40. What is the largest of them?
  3. 3.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?
  4. 4.The sum of two numbers is 28 and their difference is 18. What is the larger number?
  5. 5.The sum of 4 consecutive even numbers is 164. What is the smallest of them?
  6. 6.The sum of 3 consecutive numbers is 135. What is the largest of them?
  7. 7.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 9. What is the number?
  8. 8.The sum of 3 consecutive numbers is 132. What is the largest of them?
  9. 9.One number is 6 times another. Their difference is 190. What is the smaller number?
  10. 10.The sum of two numbers is 15 and their difference is 13. What is the smaller number?
  11. 11.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?
  12. 12.One number is 3 times another. Their difference is 66. What is the smaller number?
  13. 13.The sum of two numbers is 13 and their difference is 9. What is the smaller number?
  14. 14.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 18. What is the number?
  15. 15.The sum of 3 consecutive odd numbers is 81. What is the smallest of them?
  16. 16.The sum of 4 consecutive odd numbers is 280. What is the smallest of them?
  17. 17.The sum of 3 consecutive numbers is 138. What is the smallest of them?
  18. 18.The sum of 5 consecutive numbers is 90. What is the largest of them?
  19. 19.The digits of a two-digit number add up to 8. When the digits swap places, the number goes up by 54. What is the number?
  20. 20.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?
  21. 21.One number is 6 times another. Their difference is 200. What is the smaller number?
  22. 22.The sum of 3 consecutive numbers is 183. What is the largest of them?
  23. 23.The sum of 5 consecutive numbers is 65. What is the smallest of them?
  24. 24.One number is 6 times another. Their difference is 15. What is the smaller number?
  25. 25.The sum of two numbers is 133 and their difference is 59. What is the smaller number?
  26. 26.One number is 2 times another. Their difference is 13. What is the smaller number?
  27. 27.The sum of 4 consecutive odd numbers is 232. What is the smallest of them?
  28. 28.The sum of 4 consecutive numbers is 38. What is the largest of them?
  29. 29.The sum of 3 consecutive numbers is 111. What is the smallest of them?
  30. 30.The sum of two numbers is 150 and their difference is 22. What is the smaller number?
  31. 31.The sum of 4 consecutive even numbers is 308. What is the largest of them?
  32. 32.The sum of 3 consecutive odd numbers is 27. What is the smallest of them?
  33. 33.The sum of 3 consecutive numbers is 54. What is the largest of them?
  34. 34.One number is 3 times another. Their difference is 20. What is the smaller number?
  35. 35.The sum of two numbers is 88 and their difference is 76. What is the larger number?
  36. 36.The sum of two numbers is 74 and their difference is 14. What is the smaller number?
  37. 37.The sum of two numbers is 101 and their difference is 97. What is the larger number?
  38. 38.One number is 4 times another. Their difference is 24. What is the smaller number?
  39. 39.One number is 6 times another. Their difference is 185. What is the smaller number?
  40. 40.The sum of 4 consecutive even numbers is 156. What is the largest of them?

Answer key

  1. 23
  2. 10
  3. 56
  4. 23
  5. 38
  6. 46
  7. 45
  8. 45
  9. 38
  10. 1
  11. 24
  12. 33
  13. 2
  14. 35
  15. 25
  16. 67
  17. 45
  18. 20
  19. 17
  20. 14
  21. 40
  22. 62
  23. 11
  24. 3
  25. 37
  26. 13
  27. 55
  28. 11
  29. 36
  30. 64
  31. 80
  32. 7
  33. 19
  34. 10
  35. 82
  36. 30
  37. 99
  38. 8
  39. 37
  40. 42

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