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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 673 · 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 numbers is 45. What is the largest of them?
  2. 2.The sum of two numbers is 65 and their difference is 23. What is the larger number?
  3. 3.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 45. What is the number?
  4. 4.The sum of two numbers is 143 and their difference is 5. What is the smaller number?
  5. 5.The digits of a two-digit number add up to 12. When the digits swap places, the number goes up by 36. What is the number?
  6. 6.The sum of two numbers is 65 and their difference is 45. What is the smaller number?
  7. 7.The sum of two numbers is 23 and their difference is 19. What is the smaller number?
  8. 8.The sum of 4 consecutive numbers is 30. What is the largest of them?
  9. 9.The sum of 3 consecutive numbers is 147. What is the smallest of them?
  10. 10.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 54. What is the number?
  11. 11.The sum of 3 consecutive odd numbers is 129. What is the largest of them?
  12. 12.The sum of two numbers is 161 and their difference is 21. What is the larger number?
  13. 13.The sum of 4 consecutive odd numbers is 160. What is the smallest of them?
  14. 14.One number is 4 times another. Their difference is 51. What is the smaller number?
  15. 15.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?
  16. 16.The sum of 4 consecutive even numbers is 300. What is the smallest of them?
  17. 17.The sum of two numbers is 112 and their difference is 64. What is the larger number?
  18. 18.The sum of two numbers is 124 and their difference is 48. What is the smaller number?
  19. 19.The sum of 4 consecutive even numbers is 220. What is the largest of them?
  20. 20.The sum of two numbers is 94 and their difference is 86. What is the larger number?
  21. 21.The sum of 4 consecutive even numbers is 196. What is the smallest of them?
  22. 22.One number is 2 times another. Their difference is 40. What is the smaller number?
  23. 23.The sum of two numbers is 118 and their difference is 12. What is the smaller number?
  24. 24.The sum of 5 consecutive numbers is 45. What is the smallest of them?
  25. 25.The sum of two numbers is 48 and their difference is 34. What is the smaller number?
  26. 26.The sum of two numbers is 35 and their difference is 5. What is the larger number?
  27. 27.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?
  28. 28.The sum of 4 consecutive even numbers is 84. What is the smallest of them?
  29. 29.The sum of two numbers is 97 and their difference is 19. What is the larger number?
  30. 30.The sum of 3 consecutive numbers is 123. What is the smallest of them?
  31. 31.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 72. What is the number?
  32. 32.One number is 4 times another. Their difference is 12. What is the smaller number?
  33. 33.The sum of two numbers is 41 and their difference is 1. What is the larger number?
  34. 34.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?
  35. 35.One number is 4 times another. Their difference is 114. What is the smaller number?
  36. 36.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?
  37. 37.The sum of 3 consecutive numbers is 159. What is the largest of them?
  38. 38.The sum of 3 consecutive odd numbers is 81. What is the largest of them?
  39. 39.The sum of 5 consecutive numbers is 215. What is the smallest of them?
  40. 40.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 63. What is the number?

Answer key

  1. 16
  2. 44
  3. 38
  4. 69
  5. 48
  6. 10
  7. 2
  8. 9
  9. 48
  10. 28
  11. 45
  12. 91
  13. 37
  14. 17
  15. 37
  16. 72
  17. 88
  18. 38
  19. 58
  20. 90
  21. 46
  22. 40
  23. 53
  24. 7
  25. 7
  26. 20
  27. 56
  28. 18
  29. 58
  30. 40
  31. 19
  32. 4
  33. 21
  34. 67
  35. 38
  36. 12
  37. 54
  38. 29
  39. 41
  40. 18

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