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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. Simplify the expression [(b^2 - c^2) / (b - c)]






2. Can you add sqrt 3 and sqrt 5?






3. sqrt 2(sqrt 6)=






4. Formula of rectangle where l increases by 20% and w decreases by 20%






5. What is a tangent?






6. (-1)^3 =






7. a^2 - 2ab + b^2






8. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. In how many ways can the judges award the 3 prizes?






9. In a regular polygon with n sides - the formula for the sum of interior angles






10. What is the side length of an equilateral triangle with altitude 6?






11. (12sqrt15) / (2sqrt5) =






12. 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?






13. The larger the absolute value of the slope...






14. What is an exterior angle?






15. 0^0






16. For what values should the domain be restricted for the function f(x) = sqrt(x + 8)






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






18. In a triangle where the two legs are 4 and 3 - what is the value of a line directly intersecting the middle coming from the meeting point of the two legs?






19. What are the smallest three prime numbers greater than 65?






20. Suppose that the graph of f(x) is the result of sliding the graph of y=2x^2 down 3 units of spaces. What is the new equation?






21. Define a 'Term' -






22. Simplify (a^2 + b)^2 - (a^2 - b)^2






23. What are congruent triangles?






24. x^6 / x^3






25. What transformation occurs if point C is reflected over the x-axis and then the y-axis?






26. Area of a triangle?






27. If the 80th percentile of the measurements is 72degrees - about how many measurments are between 69 degrees and 72 degrees? Round your answer to the nearest tenth






28. (-1)^2 =






29. What are the integers?






30. When the 'a' in a parabola is positive....






31. Find the surface area of a cylinder with radius 3 and height 12.






32. 5/6 in percent?






33. What is the third quartile of the following data set: 44 - 58 - 63 - 63 - 68 - 70 - 82






34. What is a central angle?






35. Define a 'monomial'






36. What is the ratio of the sides of a 30-60-90 triangle?






37. To multiply a number by 10^x






38. In a triangle inscribed inside a circle - where the diameter is one side of the triangle - which angle is largest?






39. a^2 - b^2 =






40. Suppose that the graph of f(x) is the result of stretching y=x + 5 away from the x-axis by a factor of 2. What is the new equation for the graph f(x)?






41. The objects in a set are called two names:






42. 413.03 x 10^(-4) =






43. Order of quadrants:






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






45. 10<all primes<20






46. Describe the relationship between 3x^2 and 3(x - 1)^2






47. What is a set with no members called?






48. 10^6 has how many zeroes?






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






50. 1/2 divided by 3/7 is the same as