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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 753 · 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 4 consecutive odd numbers is 336. What is the smallest of them?
  2. 2.The sum of 3 consecutive numbers is 99. What is the smallest of them?
  3. 3.The digits of a two-digit number add up to 5. When the digits swap places, the number goes up by 9. What is the number?
  4. 4.One number is 6 times another. Their difference is 135. What is the smaller number?
  5. 5.The sum of 3 consecutive numbers is 144. What is the largest of them?
  6. 6.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?
  7. 7.One number is 6 times another. Their difference is 120. What is the smaller number?
  8. 8.One number is 6 times another. Their difference is 50. What is the smaller number?
  9. 9.The sum of 3 consecutive even numbers is 66. What is the smallest of them?
  10. 10.The digits of a two-digit number add up to 13. When the digits swap places, the number goes up by 27. What is the number?
  11. 11.One number is 4 times another. Their difference is 18. What is the smaller number?
  12. 12.One number is 5 times another. Their difference is 60. What is the smaller number?
  13. 13.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?
  14. 14.One number is 3 times another. Their difference is 58. What is the smaller number?
  15. 15.The sum of 5 consecutive numbers is 170. What is the smallest of them?
  16. 16.The sum of 3 consecutive even numbers is 60. What is the smallest of them?
  17. 17.One number is 3 times another. Their difference is 34. What is the smaller number?
  18. 18.The sum of 3 consecutive even numbers is 102. What is the largest of them?
  19. 19.The sum of 3 consecutive even numbers is 96. What is the largest of them?
  20. 20.The sum of 5 consecutive numbers is 235. What is the largest of them?
  21. 21.One number is 5 times another. Their difference is 112. What is the smaller number?
  22. 22.The sum of 3 consecutive numbers is 180. What is the smallest of them?
  23. 23.The sum of 3 consecutive even numbers is 108. What is the largest of them?
  24. 24.The digits of a two-digit number add up to 11. When the digits swap places, the number goes up by 27. What is the number?
  25. 25.One number is 6 times another. Their difference is 165. What is the smaller number?
  26. 26.The sum of 3 consecutive even numbers is 228. What is the smallest of them?
  27. 27.The sum of two numbers is 148 and their difference is 16. What is the larger number?
  28. 28.One number is 6 times another. Their difference is 40. What is the smaller number?
  29. 29.The sum of 4 consecutive numbers is 242. What is the smallest of them?
  30. 30.One number is 2 times another. Their difference is 35. What is the smaller number?
  31. 31.The sum of 4 consecutive even numbers is 92. What is the smallest of them?
  32. 32.The sum of two numbers is 18 and their difference is 4. What is the smaller number?
  33. 33.One number is 3 times another. Their difference is 46. What is the smaller number?
  34. 34.The sum of 4 consecutive numbers is 226. What is the smallest of them?
  35. 35.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?
  36. 36.The sum of two numbers is 118 and their difference is 16. What is the larger number?
  37. 37.The sum of 3 consecutive odd numbers is 141. What is the largest of them?
  38. 38.The digits of a two-digit number add up to 15. When the digits swap places, the number goes up by 9. What is the number?
  39. 39.The sum of 5 consecutive numbers is 300. What is the smallest of them?
  40. 40.The sum of 5 consecutive numbers is 85. What is the largest of them?

Answer key

  1. 81
  2. 32
  3. 23
  4. 27
  5. 49
  6. 45
  7. 24
  8. 10
  9. 20
  10. 58
  11. 6
  12. 15
  13. 89
  14. 29
  15. 32
  16. 18
  17. 17
  18. 36
  19. 34
  20. 49
  21. 28
  22. 59
  23. 38
  24. 47
  25. 33
  26. 74
  27. 82
  28. 8
  29. 59
  30. 35
  31. 20
  32. 7
  33. 23
  34. 55
  35. 56
  36. 67
  37. 49
  38. 78
  39. 58
  40. 19

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