← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 545 · 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 162. What is the largest of them?
  2. 2.The sum of 4 consecutive odd numbers is 80. What is the smallest of them?
  3. 3.The sum of 3 consecutive numbers is 129. What is the smallest of them?
  4. 4.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?
  5. 5.The sum of 4 consecutive even numbers is 316. What is the largest of them?
  6. 6.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?
  7. 7.The sum of two numbers is 58 and their difference is 12. What is the larger number?
  8. 8.The sum of two numbers is 138 and their difference is 60. What is the smaller number?
  9. 9.The sum of two numbers is 51 and their difference is 13. What is the smaller number?
  10. 10.One number is 3 times another. Their difference is 36. What is the smaller number?
  11. 11.The sum of 4 consecutive even numbers is 92. What is the smallest of them?
  12. 12.The sum of 4 consecutive odd numbers is 120. What is the smallest of them?
  13. 13.The sum of 4 consecutive numbers is 230. What is the smallest of them?
  14. 14.The sum of 4 consecutive odd numbers is 280. What is the smallest of them?
  15. 15.The sum of 3 consecutive numbers is 99. What is the largest of them?
  16. 16.The sum of 3 consecutive even numbers is 102. What is the smallest of them?
  17. 17.The sum of two numbers is 31 and their difference is 3. What is the smaller number?
  18. 18.The sum of 4 consecutive numbers is 246. What is the smallest of them?
  19. 19.The sum of two numbers is 139 and their difference is 47. What is the larger number?
  20. 20.One number is 6 times another. Their difference is 65. What is the smaller number?
  21. 21.The sum of 4 consecutive odd numbers is 96. What is the largest of them?
  22. 22.The sum of 3 consecutive even numbers is 210. What is the smallest of them?
  23. 23.The sum of 5 consecutive numbers is 265. What is the largest of them?
  24. 24.The sum of 3 consecutive even numbers is 90. What is the smallest of them?
  25. 25.The sum of two numbers is 65 and their difference is 45. What is the smaller number?
  26. 26.The sum of 4 consecutive numbers is 98. What is the largest of them?
  27. 27.One number is 3 times another. Their difference is 8. What is the smaller number?
  28. 28.The sum of 3 consecutive odd numbers is 231. What is the smallest of them?
  29. 29.The sum of 5 consecutive numbers is 110. What is the smallest of them?
  30. 30.The sum of 3 consecutive even numbers is 144. What is the smallest of them?
  31. 31.The sum of 3 consecutive odd numbers is 243. What is the smallest of them?
  32. 32.The sum of two numbers is 47 and their difference is 31. What is the smaller number?
  33. 33.The sum of 5 consecutive numbers is 255. What is the smallest of them?
  34. 34.The sum of 4 consecutive numbers is 106. What is the smallest of them?
  35. 35.The sum of 3 consecutive odd numbers is 189. What is the largest of them?
  36. 36.The sum of two numbers is 70 and their difference is 38. What is the smaller number?
  37. 37.The sum of two numbers is 31 and their difference is 5. What is the smaller number?
  38. 38.The sum of 3 consecutive odd numbers is 111. What is the smallest of them?
  39. 39.The sum of two numbers is 61 and their difference is 29. What is the larger number?
  40. 40.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?

Answer key

  1. 55
  2. 17
  3. 42
  4. 12
  5. 82
  6. 29
  7. 35
  8. 39
  9. 19
  10. 18
  11. 20
  12. 27
  13. 56
  14. 67
  15. 34
  16. 32
  17. 14
  18. 60
  19. 93
  20. 13
  21. 27
  22. 68
  23. 55
  24. 28
  25. 10
  26. 26
  27. 4
  28. 75
  29. 20
  30. 46
  31. 79
  32. 8
  33. 49
  34. 25
  35. 65
  36. 16
  37. 13
  38. 35
  39. 45
  40. 13

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