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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 872 · 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 80. What is the largest of them?
  2. 2.The sum of 4 consecutive numbers is 50. What is the smallest of them?
  3. 3.One number is 3 times another. Their difference is 58. What is the smaller number?
  4. 4.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?
  5. 5.One number is 4 times another. Their difference is 117. What is the smaller number?
  6. 6.One number is 5 times another. Their difference is 32. What is the smaller number?
  7. 7.The sum of 3 consecutive numbers is 87. What is the largest of them?
  8. 8.The sum of 5 consecutive numbers is 115. What is the smallest of them?
  9. 9.The sum of 4 consecutive numbers is 86. What is the smallest of them?
  10. 10.The sum of 3 consecutive numbers is 18. What is the smallest of them?
  11. 11.The sum of two numbers is 82 and their difference is 6. What is the larger number?
  12. 12.The sum of 5 consecutive numbers is 150. What is the largest of them?
  13. 13.The sum of 3 consecutive numbers is 42. What is the smallest of them?
  14. 14.The sum of 4 consecutive even numbers is 140. What is the largest of them?
  15. 15.The sum of 4 consecutive numbers is 94. What is the smallest of them?
  16. 16.The sum of 5 consecutive numbers is 300. What is the largest of them?
  17. 17.The sum of 4 consecutive numbers is 166. What is the largest of them?
  18. 18.The sum of 4 consecutive odd numbers is 104. What is the largest of them?
  19. 19.The sum of 3 consecutive numbers is 102. What is the smallest of them?
  20. 20.The sum of two numbers is 92 and their difference is 8. What is the larger number?
  21. 21.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?
  22. 22.The sum of 3 consecutive numbers is 54. What is the smallest of them?
  23. 23.The sum of 3 consecutive numbers is 51. What is the smallest of them?
  24. 24.The sum of two numbers is 147 and their difference is 19. What is the smaller number?
  25. 25.The sum of 3 consecutive even numbers is 24. What is the smallest of them?
  26. 26.One number is 4 times another. Their difference is 84. What is the smaller number?
  27. 27.The sum of 3 consecutive even numbers is 216. What is the smallest of them?
  28. 28.One number is 2 times another. Their difference is 38. What is the smaller number?
  29. 29.The sum of 4 consecutive even numbers is 228. What is the smallest of them?
  30. 30.The sum of two numbers is 102 and their difference is 54. What is the larger number?
  31. 31.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?
  32. 32.The sum of 5 consecutive numbers is 110. What is the smallest of them?
  33. 33.The digits of a two-digit number add up to 13. When the digits swap places, the number goes up by 9. What is the number?
  34. 34.The sum of two numbers is 20 and their difference is 2. What is the larger number?
  35. 35.The sum of two numbers is 42 and their difference is 6. What is the smaller number?
  36. 36.The sum of 3 consecutive even numbers is 84. What is the largest of them?
  37. 37.The sum of 5 consecutive numbers is 50. What is the largest of them?
  38. 38.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?
  39. 39.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 63. What is the number?
  40. 40.The sum of 3 consecutive numbers is 63. What is the smallest of them?

Answer key

  1. 18
  2. 11
  3. 29
  4. 13
  5. 39
  6. 8
  7. 30
  8. 21
  9. 20
  10. 5
  11. 44
  12. 32
  13. 13
  14. 38
  15. 22
  16. 62
  17. 43
  18. 29
  19. 33
  20. 50
  21. 35
  22. 17
  23. 16
  24. 64
  25. 6
  26. 28
  27. 70
  28. 38
  29. 54
  30. 78
  31. 57
  32. 20
  33. 67
  34. 11
  35. 18
  36. 30
  37. 12
  38. 79
  39. 18
  40. 20

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