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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 307 · 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 3. When the digits swap places, the number goes up by 9. What is the number?
  2. 2.The sum of 3 consecutive numbers is 105. What is the smallest of them?
  3. 3.The sum of 4 consecutive numbers is 94. What is the smallest of them?
  4. 4.The sum of 4 consecutive even numbers is 36. What is the largest of them?
  5. 5.The sum of 3 consecutive numbers is 147. What is the smallest of them?
  6. 6.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?
  7. 7.The sum of 3 consecutive odd numbers is 207. What is the largest of them?
  8. 8.The sum of 3 consecutive numbers is 66. What is the largest of them?
  9. 9.One number is 3 times another. Their difference is 56. What is the smaller number?
  10. 10.The sum of 3 consecutive numbers is 63. What is the smallest of them?
  11. 11.One number is 2 times another. Their difference is 33. What is the smaller number?
  12. 12.The sum of 3 consecutive numbers is 69. What is the smallest of them?
  13. 13.The sum of 3 consecutive even numbers is 168. What is the smallest of them?
  14. 14.The sum of 3 consecutive numbers is 114. What is the largest of them?
  15. 15.The sum of 3 consecutive odd numbers is 93. What is the smallest of them?
  16. 16.The sum of two numbers is 59 and their difference is 11. What is the smaller number?
  17. 17.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 27. What is the number?
  18. 18.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?
  19. 19.The sum of 4 consecutive odd numbers is 88. What is the smallest of them?
  20. 20.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?
  21. 21.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 63. What is the number?
  22. 22.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?
  23. 23.The sum of two numbers is 96 and their difference is 82. What is the smaller number?
  24. 24.The sum of two numbers is 125 and their difference is 69. What is the smaller number?
  25. 25.The sum of 3 consecutive odd numbers is 147. What is the largest of them?
  26. 26.The sum of 4 consecutive even numbers is 268. What is the largest of them?
  27. 27.The sum of 3 consecutive even numbers is 48. What is the smallest of them?
  28. 28.The sum of two numbers is 56 and their difference is 50. What is the smaller number?
  29. 29.The sum of two numbers is 63 and their difference is 39. What is the larger number?
  30. 30.The sum of 4 consecutive numbers is 186. What is the largest of them?
  31. 31.One number is 3 times another. Their difference is 68. What is the smaller number?
  32. 32.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?
  33. 33.The sum of 4 consecutive odd numbers is 120. What is the largest of them?
  34. 34.The sum of 3 consecutive odd numbers is 219. What is the smallest of them?
  35. 35.The sum of 3 consecutive numbers is 30. What is the largest of them?
  36. 36.The sum of 4 consecutive even numbers is 244. What is the smallest of them?
  37. 37.The digits of a two-digit number add up to 5. When the digits swap places, the number goes up by 9. What is the number?
  38. 38.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?
  39. 39.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?
  40. 40.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 36. What is the number?

Answer key

  1. 12
  2. 34
  3. 22
  4. 12
  5. 48
  6. 78
  7. 71
  8. 23
  9. 28
  10. 20
  11. 33
  12. 22
  13. 54
  14. 39
  15. 29
  16. 24
  17. 47
  18. 45
  19. 19
  20. 56
  21. 29
  22. 69
  23. 7
  24. 28
  25. 51
  26. 70
  27. 14
  28. 3
  29. 51
  30. 48
  31. 34
  32. 79
  33. 33
  34. 71
  35. 11
  36. 58
  37. 23
  38. 14
  39. 57
  40. 37

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