← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 419 · 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 two numbers is 44 and their difference is 12. What is the larger number?
  2. 2.The sum of 4 consecutive odd numbers is 224. What is the largest of them?
  3. 3.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?
  4. 4.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?
  5. 5.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?
  6. 6.One number is 2 times another. Their difference is 30. What is the smaller number?
  7. 7.The sum of 3 consecutive even numbers is 42. What is the largest of them?
  8. 8.The sum of 4 consecutive numbers is 154. What is the smallest of them?
  9. 9.The sum of 4 consecutive odd numbers is 264. What is the smallest of them?
  10. 10.The sum of 4 consecutive even numbers is 332. What is the largest of them?
  11. 11.The digits of a two-digit number add up to 4. When the digits swap places, the number goes up by 18. What is the number?
  12. 12.The sum of 4 consecutive odd numbers is 168. What is the smallest of them?
  13. 13.The sum of 3 consecutive even numbers is 216. What is the smallest of them?
  14. 14.The sum of two numbers is 69 and their difference is 57. What is the smaller number?
  15. 15.The sum of 4 consecutive odd numbers is 64. What is the smallest of them?
  16. 16.The sum of 4 consecutive numbers is 66. What is the smallest of them?
  17. 17.One number is 6 times another. Their difference is 160. What is the smaller number?
  18. 18.The digits of a two-digit number add up to 14. When the digits swap places, the number goes up by 36. What is the number?
  19. 19.The sum of 4 consecutive numbers is 90. What is the largest of them?
  20. 20.The sum of two numbers is 58 and their difference is 30. What is the smaller number?
  21. 21.The sum of two numbers is 126 and their difference is 18. What is the smaller number?
  22. 22.The digits of a two-digit number add up to 7. When the digits swap places, the number goes up by 27. What is the number?
  23. 23.The sum of 4 consecutive numbers is 82. What is the largest of them?
  24. 24.One number is 2 times another. Their difference is 29. What is the smaller number?
  25. 25.The sum of 3 consecutive numbers is 93. What is the largest of them?
  26. 26.The sum of 3 consecutive numbers is 171. What is the largest of them?
  27. 27.The sum of 4 consecutive odd numbers is 176. What is the smallest of them?
  28. 28.The sum of 3 consecutive odd numbers is 81. What is the largest of them?
  29. 29.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?
  30. 30.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?
  31. 31.The sum of 3 consecutive odd numbers is 69. What is the smallest of them?
  32. 32.The sum of 3 consecutive even numbers is 222. What is the smallest of them?
  33. 33.One number is 5 times another. Their difference is 72. What is the smaller number?
  34. 34.One number is 4 times another. Their difference is 78. What is the smaller number?
  35. 35.The sum of 3 consecutive numbers is 141. What is the largest of them?
  36. 36.The sum of 4 consecutive numbers is 230. What is the largest of them?
  37. 37.The sum of 3 consecutive even numbers is 24. What is the largest of them?
  38. 38.One number is 2 times another. Their difference is 13. What is the smaller 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 6. When the digits swap places, the number goes up by 18. What is the number?

Answer key

  1. 28
  2. 59
  3. 89
  4. 46
  5. 28
  6. 30
  7. 16
  8. 37
  9. 63
  10. 86
  11. 13
  12. 39
  13. 70
  14. 6
  15. 13
  16. 15
  17. 32
  18. 59
  19. 24
  20. 14
  21. 54
  22. 25
  23. 22
  24. 29
  25. 32
  26. 58
  27. 41
  28. 29
  29. 48
  30. 34
  31. 21
  32. 72
  33. 18
  34. 26
  35. 48
  36. 59
  37. 10
  38. 13
  39. 57
  40. 24

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude