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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 5 · 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 even numbers is 90. What is the largest of them?
  2. 2.One number is 2 times another. Their difference is 23. What is the smaller number?
  3. 3.One number is 5 times another. Their difference is 24. What is the smaller number?
  4. 4.One number is 6 times another. Their difference is 110. What is the smaller number?
  5. 5.The sum of 5 consecutive numbers is 220. What is the smallest of them?
  6. 6.The sum of 4 consecutive odd numbers is 264. What is the largest of them?
  7. 7.The sum of two numbers is 95 and their difference is 77. What is the smaller number?
  8. 8.The sum of 5 consecutive numbers is 260. What is the smallest of them?
  9. 9.One number is 6 times another. Their difference is 170. What is the smaller number?
  10. 10.The sum of two numbers is 42 and their difference is 12. What is the larger number?
  11. 11.One number is 5 times another. Their difference is 112. What is the smaller number?
  12. 12.The sum of 4 consecutive numbers is 202. What is the smallest of them?
  13. 13.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?
  14. 14.The sum of 3 consecutive numbers is 126. What is the largest of them?
  15. 15.One number is 5 times another. Their difference is 128. What is the smaller number?
  16. 16.The sum of two numbers is 18 and their difference is 2. What is the larger number?
  17. 17.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?
  18. 18.One number is 3 times another. Their difference is 26. What is the smaller number?
  19. 19.The sum of 5 consecutive numbers is 300. What is the largest of them?
  20. 20.The sum of 5 consecutive numbers is 190. What is the smallest of them?
  21. 21.The sum of 5 consecutive numbers is 310. What is the smallest of them?
  22. 22.One number is 3 times another. Their difference is 42. What is the smaller number?
  23. 23.One number is 2 times another. Their difference is 5. What is the smaller number?
  24. 24.The sum of 4 consecutive numbers is 126. What is the largest of them?
  25. 25.The sum of 3 consecutive even numbers is 126. What is the smallest of them?
  26. 26.The digits of a two-digit number add up to 7. When the digits swap places, the number goes up by 45. What is the number?
  27. 27.The sum of two numbers is 16 and their difference is 10. What is the smaller number?
  28. 28.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?
  29. 29.The sum of 4 consecutive odd numbers is 96. What is the smallest of them?
  30. 30.The sum of two numbers is 121 and their difference is 19. What is the smaller number?
  31. 31.The sum of 3 consecutive even numbers is 24. What is the largest of them?
  32. 32.The sum of two numbers is 48 and their difference is 4. What is the smaller number?
  33. 33.The sum of two numbers is 21 and their difference is 11. What is the smaller number?
  34. 34.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?
  35. 35.One number is 2 times another. Their difference is 30. What is the smaller number?
  36. 36.One number is 3 times another. Their difference is 30. What is the smaller number?
  37. 37.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?
  38. 38.The sum of 5 consecutive numbers is 115. What is the largest of them?
  39. 39.The sum of two numbers is 26 and their difference is 12. What is the larger number?
  40. 40.One number is 3 times another. Their difference is 76. What is the smaller number?

Answer key

  1. 32
  2. 23
  3. 6
  4. 22
  5. 42
  6. 69
  7. 9
  8. 50
  9. 34
  10. 27
  11. 28
  12. 49
  13. 35
  14. 43
  15. 32
  16. 10
  17. 89
  18. 13
  19. 62
  20. 36
  21. 60
  22. 21
  23. 5
  24. 33
  25. 40
  26. 16
  27. 3
  28. 67
  29. 21
  30. 51
  31. 10
  32. 22
  33. 5
  34. 46
  35. 30
  36. 15
  37. 14
  38. 25
  39. 19
  40. 38

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