← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 384 · 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.One number is 5 times another. Their difference is 144. What is the smaller number?
  2. 2.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?
  3. 3.The sum of 4 consecutive numbers is 74. What is the smallest of them?
  4. 4.The sum of 3 consecutive numbers is 96. What is the smallest of them?
  5. 5.The sum of 4 consecutive numbers is 82. What is the largest of them?
  6. 6.The sum of 3 consecutive numbers is 75. What is the largest of them?
  7. 7.The sum of 4 consecutive numbers is 70. What is the smallest of them?
  8. 8.One number is 2 times another. Their difference is 37. What is the smaller number?
  9. 9.One number is 4 times another. Their difference is 81. What is the smaller number?
  10. 10.The sum of 3 consecutive odd numbers is 39. What is the largest of them?
  11. 11.The sum of 3 consecutive odd numbers is 45. What is the smallest of them?
  12. 12.One number is 3 times another. Their difference is 24. What is the smaller number?
  13. 13.One number is 5 times another. Their difference is 40. What is the smaller number?
  14. 14.The sum of 4 consecutive even numbers is 124. What is the smallest of them?
  15. 15.The sum of 3 consecutive numbers is 33. What is the smallest of them?
  16. 16.One number is 2 times another. Their difference is 17. What is the smaller number?
  17. 17.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?
  18. 18.The sum of 5 consecutive numbers is 250. What is the largest of them?
  19. 19.The sum of 4 consecutive numbers is 130. What is the largest of them?
  20. 20.The sum of two numbers is 18 and their difference is 10. What is the smaller number?
  21. 21.The sum of 3 consecutive odd numbers is 171. What is the largest of them?
  22. 22.The sum of 5 consecutive numbers is 215. What is the smallest of them?
  23. 23.The sum of two numbers is 154 and their difference is 10. What is the larger number?
  24. 24.One number is 5 times another. Their difference is 96. What is the smaller number?
  25. 25.The sum of two numbers is 48 and their difference is 4. What is the smaller number?
  26. 26.The sum of two numbers is 39 and their difference is 21. What is the smaller number?
  27. 27.The sum of 4 consecutive even numbers is 92. What is the largest of them?
  28. 28.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?
  29. 29.The sum of 3 consecutive numbers is 63. What is the smallest of them?
  30. 30.The sum of two numbers is 96 and their difference is 4. What is the smaller number?
  31. 31.The sum of two numbers is 151 and their difference is 39. What is the smaller number?
  32. 32.One number is 5 times another. Their difference is 140. What is the smaller number?
  33. 33.One number is 5 times another. Their difference is 72. What is the smaller number?
  34. 34.The sum of 5 consecutive numbers is 220. What is the smallest of them?
  35. 35.One number is 3 times another. Their difference is 26. What is the smaller number?
  36. 36.One number is 2 times another. Their difference is 32. What is the smaller number?
  37. 37.The sum of 3 consecutive numbers is 27. What is the smallest of them?
  38. 38.The sum of two numbers is 116 and their difference is 24. What is the larger number?
  39. 39.The sum of 3 consecutive numbers is 126. What is the largest of them?
  40. 40.One number is 3 times another. Their difference is 64. What is the smaller number?

Answer key

  1. 36
  2. 89
  3. 17
  4. 31
  5. 22
  6. 26
  7. 16
  8. 37
  9. 27
  10. 15
  11. 13
  12. 12
  13. 10
  14. 28
  15. 10
  16. 17
  17. 25
  18. 52
  19. 34
  20. 4
  21. 59
  22. 41
  23. 82
  24. 24
  25. 22
  26. 9
  27. 26
  28. 35
  29. 20
  30. 46
  31. 56
  32. 35
  33. 18
  34. 42
  35. 13
  36. 32
  37. 8
  38. 70
  39. 43
  40. 32

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