← Number problems lesson New set →

Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 48 · 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 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?
  2. 2.One number is 3 times another. Their difference is 26. What is the smaller number?
  3. 3.The sum of 3 consecutive odd numbers is 141. What is the largest of them?
  4. 4.The sum of 4 consecutive numbers is 82. What is the smallest of them?
  5. 5.The sum of 3 consecutive even numbers is 186. What is the smallest of them?
  6. 6.The sum of 4 consecutive even numbers is 172. What is the smallest of them?
  7. 7.The sum of 4 consecutive even numbers is 260. What is the smallest of them?
  8. 8.The sum of 5 consecutive numbers is 35. What is the smallest of them?
  9. 9.The sum of 5 consecutive numbers is 210. What is the smallest of them?
  10. 10.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?
  11. 11.The sum of two numbers is 120 and their difference is 20. What is the larger number?
  12. 12.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?
  13. 13.One number is 6 times another. Their difference is 150. What is the smaller number?
  14. 14.The sum of 5 consecutive numbers is 230. What is the smallest of them?
  15. 15.The sum of 3 consecutive odd numbers is 201. What is the smallest of them?
  16. 16.The sum of 3 consecutive even numbers is 246. What is the smallest of them?
  17. 17.The sum of 3 consecutive even numbers is 204. What is the largest of them?
  18. 18.The sum of 5 consecutive numbers is 240. What is the largest of them?
  19. 19.One number is 4 times another. Their difference is 75. What is the smaller number?
  20. 20.One number is 5 times another. Their difference is 84. What is the smaller number?
  21. 21.The sum of two numbers is 65 and their difference is 51. What is the larger number?
  22. 22.The sum of 4 consecutive odd numbers is 144. What is the smallest of them?
  23. 23.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?
  24. 24.The sum of two numbers is 160 and their difference is 32. What is the smaller number?
  25. 25.The sum of two numbers is 106 and their difference is 16. What is the smaller number?
  26. 26.The sum of two numbers is 78 and their difference is 76. What is the smaller number?
  27. 27.The sum of 3 consecutive even numbers is 156. What is the largest of them?
  28. 28.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?
  29. 29.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?
  30. 30.The sum of 5 consecutive numbers is 45. What is the smallest of them?
  31. 31.The sum of two numbers is 26 and their difference is 22. What is the smaller number?
  32. 32.The digits of a two-digit number add up to 15. When the digits swap places, the number goes up by 27. What is the number?
  33. 33.One number is 5 times another. Their difference is 56. What is the smaller number?
  34. 34.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?
  35. 35.One number is 3 times another. Their difference is 52. What is the smaller number?
  36. 36.One number is 2 times another. Their difference is 37. What is the smaller number?
  37. 37.The sum of 5 consecutive numbers is 125. What is the smallest of them?
  38. 38.The sum of 3 consecutive numbers is 69. What is the largest of them?
  39. 39.The sum of 3 consecutive numbers is 132. What is the smallest of them?
  40. 40.The sum of 5 consecutive numbers is 130. What is the smallest of them?

Answer key

  1. 45
  2. 13
  3. 49
  4. 19
  5. 60
  6. 40
  7. 62
  8. 5
  9. 40
  10. 56
  11. 70
  12. 89
  13. 30
  14. 44
  15. 65
  16. 80
  17. 70
  18. 50
  19. 25
  20. 21
  21. 58
  22. 33
  23. 25
  24. 64
  25. 45
  26. 1
  27. 54
  28. 34
  29. 46
  30. 7
  31. 2
  32. 69
  33. 14
  34. 79
  35. 26
  36. 37
  37. 23
  38. 24
  39. 43
  40. 24

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