← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 993 · 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 5 consecutive numbers is 130. What is the smallest of them?
  2. 2.One number is 3 times another. Their difference is 40. What is the smaller number?
  3. 3.The sum of 3 consecutive numbers is 144. What is the largest of them?
  4. 4.One number is 4 times another. Their difference is 27. What is the smaller number?
  5. 5.One number is 6 times another. Their difference is 20. What is the smaller number?
  6. 6.The sum of 3 consecutive numbers is 87. What is the largest of them?
  7. 7.The sum of 4 consecutive even numbers is 68. What is the smallest of them?
  8. 8.One number is 3 times another. Their difference is 12. What is the smaller number?
  9. 9.One number is 2 times another. Their difference is 12. What is the smaller number?
  10. 10.The sum of two numbers is 139 and their difference is 31. What is the smaller number?
  11. 11.The sum of two numbers is 72 and their difference is 52. What is the smaller number?
  12. 12.The sum of two numbers is 85 and their difference is 81. What is the larger number?
  13. 13.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?
  14. 14.The sum of 3 consecutive odd numbers is 165. What is the largest of them?
  15. 15.One number is 3 times another. Their difference is 6. What is the smaller number?
  16. 16.The sum of 3 consecutive odd numbers is 99. What is the smallest of them?
  17. 17.One number is 4 times another. Their difference is 21. What is the smaller number?
  18. 18.The sum of 3 consecutive numbers is 63. What is the largest of them?
  19. 19.The sum of 4 consecutive even numbers is 188. What is the smallest of them?
  20. 20.The sum of two numbers is 40 and their difference is 22. What is the smaller number?
  21. 21.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?
  22. 22.The sum of two numbers is 125 and their difference is 11. What is the smaller number?
  23. 23.The sum of two numbers is 30 and their difference is 8. What is the smaller number?
  24. 24.The sum of 4 consecutive numbers is 246. What is the smallest of them?
  25. 25.The sum of 4 consecutive odd numbers is 232. What is the smallest of them?
  26. 26.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?
  27. 27.One number is 5 times another. Their difference is 40. What is the smaller number?
  28. 28.The sum of 4 consecutive odd numbers is 272. What is the largest of them?
  29. 29.The sum of 4 consecutive even numbers is 284. What is the smallest of them?
  30. 30.One number is 6 times another. Their difference is 115. What is the smaller number?
  31. 31.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?
  32. 32.The sum of 5 consecutive numbers is 135. What is the smallest of them?
  33. 33.The sum of 5 consecutive numbers is 75. What is the smallest of them?
  34. 34.The sum of 4 consecutive numbers is 194. What is the largest of them?
  35. 35.One number is 4 times another. Their difference is 120. What is the smaller number?
  36. 36.The sum of two numbers is 69 and their difference is 3. What is the smaller number?
  37. 37.The sum of 5 consecutive numbers is 290. What is the largest of them?
  38. 38.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?
  39. 39.The sum of 4 consecutive numbers is 162. What is the largest of them?
  40. 40.The sum of 5 consecutive numbers is 250. What is the largest of them?

Answer key

  1. 24
  2. 20
  3. 49
  4. 9
  5. 4
  6. 30
  7. 14
  8. 6
  9. 12
  10. 54
  11. 10
  12. 83
  13. 14
  14. 57
  15. 3
  16. 31
  17. 7
  18. 22
  19. 44
  20. 9
  21. 79
  22. 57
  23. 11
  24. 60
  25. 55
  26. 56
  27. 10
  28. 71
  29. 68
  30. 23
  31. 45
  32. 25
  33. 13
  34. 50
  35. 40
  36. 33
  37. 60
  38. 29
  39. 42
  40. 52

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