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GRE Math: Common Errors

Subjects : gre, math
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Legs 6 - 8. Hypotenuse?






2. What is the name for a grouping of the members within a set based on a shared characteristic?






3. Which is greater? 27^(-4) or 9^(-8)






4. What is the absolute value function?






5. Formula to calculate arc length?






6. 10<all primes<20






7. How to determine percent increase?






8. How to determine percent decrease?






9. 2sqrt4 + sqrt4 =






10. Solve the quadratic equation ax^2 + bx + c= 0






11. Reduce: 4.8 : 0.8 : 1.6






12. Define a 'monomial'






13. Factor a^2 + 2ab + b^2






14. The perimeter of a square is 48 inches. The length of its diagonal is:






15. Area of a triangle?






16. What is the maximum value for the function g(x) = (-2x^2) -1?






17. A brick with dimensions 10. 15 and 25 weighs 1.5 kg. A second brick (same density) has dimensions 12 - 18 - and 30. What is the weight of the second brick?






18. 1/2 divided by 3/7 is the same as






19. How many multiples does a given number have?






20. (-1)^2 =






21. What is the 'union' of A and B?






22. How many 3-digit positive integers are even and do not contain the digit 4?






23. What is the graph of f(x) shifted downward c units or spaces?






24. What is the sum of the angles of a triangle?






25. What is the ratio of the sides of an isosceles right triangle?






26. 7/8 in percent?






27. Max and Min lengths for a side of a triangle?






28. If Madagascar'S exports totaled 1.3 billion in 2009 - and 4% came from China - what was the value in millions of the country'S exports to China?






29. 5 bakeries sell an average of 300 muffins per bakery per day. If 2 stop making muffins but the total muffins sold stays the same - what is the average of muffins per bakery sold among the remaining?






30. What is the empty set?






31. 25^(1/2) or sqrt. 25 =






32. What is the surface area of a cylinder with radius 5 and height 8?






33. Simplify the expression (p^2 - q^2)/ -5(q - p)






34. What are the real numbers?






35. What is the ratio of the surface area of a cube with an edge of 10 to the surface area of a rectangular solid with dimensions 2 - 4 - and 6?






36. Legs: 3 - 4. Hypotenuse?






37. What does the graph (x+2)^2 + (y+2)^2 = 9 look like?






38. How many sides does a hexagon have?






39. x^(-y)=






40. a^2 - b^2 =






41. Can you subtract 3sqrt4 from sqrt4?






42. 50 < all primes< 60






43. Which quadrant is the upper left hand?






44. What number between 70 & 75 - inclusive - has the greatest number of factors?






45. What is an isoceles triangle?






46. From a box of 12 candles - you are to remove 5. How many different sets of 5 candles could you remove?






47. Formula to find a circle'S circumference from its diameter?






48. 70 < all primes< 80






49. What is the area of a regular hexagon with side 6?






50. What is a central angle?