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Number Problems Worksheet

Quantitative aptitude lesson 27: Number problems · Set 288 · 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 numbers is 90. What is the largest of them?
  2. 2.The digits of a two-digit number add up to 6. When the digits swap places, the number goes up by 36. What is the number?
  3. 3.The sum of 3 consecutive odd numbers is 39. What is the largest of them?
  4. 4.One number is 3 times another. Their difference is 80. What is the smaller number?
  5. 5.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?
  6. 6.The sum of 4 consecutive even numbers is 44. What is the smallest of them?
  7. 7.One number is 6 times another. Their difference is 105. What is the smaller number?
  8. 8.The sum of 4 consecutive odd numbers is 200. What is the smallest of them?
  9. 9.The sum of two numbers is 54 and their difference is 4. What is the larger number?
  10. 10.The sum of two numbers is 131 and their difference is 37. What is the larger number?
  11. 11.The digits of a two-digit number add up to 14. When the digits swap places, the number goes up by 18. What is the number?
  12. 12.The sum of 3 consecutive odd numbers is 75. What is the largest of them?
  13. 13.The sum of two numbers is 110 and their difference is 20. What is the smaller number?
  14. 14.The sum of 3 consecutive odd numbers is 153. What is the largest of them?
  15. 15.The sum of 5 consecutive numbers is 40. What is the largest of them?
  16. 16.One number is 2 times another. Their difference is 4. What is the smaller number?
  17. 17.The digits of a two-digit number add up to 10. When the digits swap places, the number goes up by 36. What is the number?
  18. 18.The sum of 4 consecutive odd numbers is 40. What is the smallest of them?
  19. 19.The sum of 3 consecutive even numbers is 222. What is the smallest of them?
  20. 20.The sum of two numbers is 73 and their difference is 41. What is the smaller number?
  21. 21.One number is 6 times another. Their difference is 140. What is the smaller number?
  22. 22.The sum of 4 consecutive numbers is 130. What is the smallest of them?
  23. 23.The digits of a two-digit number add up to 9. When the digits swap places, the number goes up by 27. What is the number?
  24. 24.The sum of two numbers is 81 and their difference is 3. What is the smaller number?
  25. 25.The sum of 3 consecutive odd numbers is 123. What is the smallest of them?
  26. 26.The sum of 3 consecutive numbers is 93. What is the largest of them?
  27. 27.The sum of two numbers is 104 and their difference is 34. What is the larger number?
  28. 28.One number is 3 times another. Their difference is 6. What is the smaller number?
  29. 29.The sum of 3 consecutive numbers is 36. What is the largest of them?
  30. 30.The sum of 4 consecutive numbers is 66. What is the largest of them?
  31. 31.The sum of 4 consecutive even numbers is 332. What is the smallest of them?
  32. 32.One number is 5 times another. Their difference is 64. What is the smaller number?
  33. 33.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?
  34. 34.The sum of 3 consecutive numbers is 39. What is the smallest of them?
  35. 35.The sum of 3 consecutive odd numbers is 57. What is the largest of them?
  36. 36.The sum of two numbers is 28 and their difference is 18. What is the larger number?
  37. 37.One number is 3 times another. Their difference is 40. What is the smaller number?
  38. 38.The sum of two numbers is 117 and their difference is 67. What is the smaller number?
  39. 39.One number is 5 times another. Their difference is 136. What is the smaller number?
  40. 40.The sum of 4 consecutive even numbers is 196. What is the smallest of them?

Answer key

  1. 24
  2. 15
  3. 15
  4. 40
  5. 57
  6. 8
  7. 21
  8. 47
  9. 29
  10. 84
  11. 68
  12. 27
  13. 45
  14. 53
  15. 10
  16. 4
  17. 37
  18. 7
  19. 72
  20. 16
  21. 28
  22. 31
  23. 36
  24. 39
  25. 39
  26. 32
  27. 69
  28. 3
  29. 13
  30. 18
  31. 80
  32. 16
  33. 89
  34. 12
  35. 21
  36. 23
  37. 20
  38. 25
  39. 34
  40. 46

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