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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 876 · 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 digits of a two-digit number add up to 15. When the digits swap places, the number goes up by 27. What is the number?
  2. 2.One number is 6 times another. Their difference is 185. What is the smaller number?
  3. 3.The digits of a two-digit number add up to 16. When the digits swap places, the number goes up by 18. What is the number?
  4. 4.The sum of 3 consecutive even numbers is 126. What is the largest of them?
  5. 5.The sum of 4 consecutive numbers is 54. What is the largest of them?
  6. 6.The sum of 4 consecutive numbers is 94. What is the smallest of them?
  7. 7.The sum of 3 consecutive odd numbers is 249. What is the smallest of them?
  8. 8.The sum of 4 consecutive numbers is 110. What is the smallest of them?
  9. 9.The sum of two numbers is 21 and their difference is 11. What is the larger number?
  10. 10.The digits of a two-digit number add up to 7. When the digits swap places, the number goes up by 9. What is the number?
  11. 11.The sum of 5 consecutive numbers is 90. What is the largest of them?
  12. 12.The sum of 4 consecutive numbers is 62. What is the smallest of them?
  13. 13.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?
  14. 14.The sum of 3 consecutive even numbers is 78. What is the largest of them?
  15. 15.One number is 6 times another. Their difference is 85. What is the smaller number?
  16. 16.The sum of 4 consecutive numbers is 246. What is the largest of them?
  17. 17.The sum of 5 consecutive numbers is 100. What is the largest of them?
  18. 18.The sum of 4 consecutive numbers is 70. What is the smallest of them?
  19. 19.The sum of 5 consecutive numbers is 265. What is the smallest of them?
  20. 20.The sum of 3 consecutive odd numbers is 207. What is the smallest of them?
  21. 21.The sum of 3 consecutive even numbers is 156. What is the largest of them?
  22. 22.The sum of 3 consecutive even numbers is 222. What is the largest of them?
  23. 23.The sum of 3 consecutive numbers is 39. What is the smallest of them?
  24. 24.The sum of 4 consecutive odd numbers is 80. What is the largest of them?
  25. 25.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?
  26. 26.One number is 2 times another. Their difference is 38. What is the smaller number?
  27. 27.One number is 2 times another. Their difference is 13. What is the smaller number?
  28. 28.The sum of 5 consecutive numbers is 50. What is the smallest of them?
  29. 29.The sum of 5 consecutive numbers is 85. What is the largest of them?
  30. 30.One number is 6 times another. Their difference is 90. What is the smaller number?
  31. 31.The sum of 4 consecutive odd numbers is 192. What is the smallest of them?
  32. 32.One number is 3 times another. Their difference is 64. What is the smaller number?
  33. 33.The sum of two numbers is 65 and their difference is 5. What is the larger number?
  34. 34.The sum of 4 consecutive numbers is 82. What is the largest of them?
  35. 35.The sum of 3 consecutive odd numbers is 177. What is the smallest of them?
  36. 36.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?
  37. 37.One number is 2 times another. Their difference is 19. What is the smaller number?
  38. 38.The digits of a two-digit number add up to 3. When the digits swap places, the number goes up by 9. What is the number?
  39. 39.The sum of 3 consecutive odd numbers is 183. What is the largest of them?
  40. 40.The sum of 3 consecutive numbers is 129. What is the largest of them?

Answer key

  1. 69
  2. 37
  3. 79
  4. 44
  5. 15
  6. 22
  7. 81
  8. 26
  9. 16
  10. 34
  11. 20
  12. 14
  13. 89
  14. 28
  15. 17
  16. 63
  17. 22
  18. 16
  19. 51
  20. 67
  21. 54
  22. 76
  23. 12
  24. 23
  25. 68
  26. 38
  27. 13
  28. 8
  29. 19
  30. 18
  31. 45
  32. 32
  33. 35
  34. 22
  35. 57
  36. 78
  37. 19
  38. 12
  39. 63
  40. 44

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