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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 226 · 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 odd numbers is 81. What is the largest of them?
  2. 2.The sum of two numbers is 95 and their difference is 3. What is the smaller number?
  3. 3.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?
  4. 4.One number is 6 times another. Their difference is 140. What is the smaller number?
  5. 5.One number is 3 times another. Their difference is 72. What is the smaller number?
  6. 6.One number is 2 times another. Their difference is 22. What is the smaller number?
  7. 7.The sum of 3 consecutive numbers is 123. What is the largest of them?
  8. 8.The sum of two numbers is 83 and their difference is 69. What is the smaller number?
  9. 9.The sum of two numbers is 145 and their difference is 47. What is the larger number?
  10. 10.The sum of 4 consecutive odd numbers is 120. What is the largest of them?
  11. 11.The sum of 4 consecutive numbers is 238. What is the largest of them?
  12. 12.The sum of two numbers is 23 and their difference is 21. What is the smaller number?
  13. 13.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?
  14. 14.The sum of 4 consecutive numbers is 98. What is the largest of them?
  15. 15.The sum of 3 consecutive even numbers is 78. What is the largest of them?
  16. 16.One number is 2 times another. Their difference is 5. What is the smaller number?
  17. 17.The sum of two numbers is 135 and their difference is 13. What is the smaller number?
  18. 18.The sum of 4 consecutive even numbers is 252. What is the largest of them?
  19. 19.The sum of 4 consecutive numbers is 170. What is the largest of them?
  20. 20.One number is 5 times another. Their difference is 96. What is the smaller number?
  21. 21.The sum of two numbers is 49 and their difference is 15. What is the smaller number?
  22. 22.The sum of 4 consecutive numbers is 210. What is the smallest of them?
  23. 23.One number is 4 times another. Their difference is 33. What is the smaller number?
  24. 24.One number is 4 times another. Their difference is 87. What is the smaller number?
  25. 25.The sum of 4 consecutive numbers is 170. What is the smallest of them?
  26. 26.The sum of 3 consecutive numbers is 81. What is the smallest of them?
  27. 27.One number is 3 times another. Their difference is 18. What is the smaller number?
  28. 28.The sum of 3 consecutive numbers is 93. What is the smallest of them?
  29. 29.The sum of two numbers is 33 and their difference is 17. What is the smaller 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 3 consecutive numbers is 99. What is the smallest of them?
  32. 32.The sum of 3 consecutive even numbers is 84. What is the smallest of them?
  33. 33.The sum of 3 consecutive odd numbers is 225. What is the smallest of them?
  34. 34.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?
  35. 35.The sum of two numbers is 75 and their difference is 41. What is the smaller number?
  36. 36.One number is 3 times another. Their difference is 70. What is the smaller number?
  37. 37.One number is 3 times another. Their difference is 66. What is the smaller number?
  38. 38.The sum of two numbers is 24 and their difference is 22. What is the smaller number?
  39. 39.The sum of 3 consecutive odd numbers is 99. What is the smallest of them?
  40. 40.The sum of 3 consecutive even numbers is 138. What is the largest of them?

Answer key

  1. 29
  2. 46
  3. 67
  4. 28
  5. 36
  6. 22
  7. 42
  8. 7
  9. 96
  10. 33
  11. 61
  12. 1
  13. 79
  14. 26
  15. 28
  16. 5
  17. 61
  18. 66
  19. 44
  20. 24
  21. 17
  22. 51
  23. 11
  24. 29
  25. 41
  26. 26
  27. 9
  28. 30
  29. 8
  30. 14
  31. 32
  32. 26
  33. 73
  34. 35
  35. 17
  36. 35
  37. 33
  38. 1
  39. 31
  40. 48

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