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






2. If 4500 is invested at a simple interest rate of 6% - what is the value of the investment after 10 months?






3. If 10800 is invested at a simple interest rate of 4% - what is the value of the investment after 18 months?






4. Evaluate 3& 2/7 / 1/3






5. What is the name of set with a number of elements which cannot be counted?






6. Define a 'monomial'






7. x^6 / x^3






8. Legs 6 - 8. Hypotenuse?






9. Which quadrant is the lower left hand?






10. Circumference of a circle?






11. For similar triangles - the ratio of their corresponding sides is 2:3. What is the ratio of their areas?






12. Simplify 9^(1/2) X 4^3 X 2^(-6)?






13. What are the integers?






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






15. When the 'a' in the parabola is negative...






16. To convert a percent to a fraction....






17. How to determine percent decrease?






18. If you have a set of n objects - but you only want to order k of them - what formula do you use to determine the number of permutations?






19. Can the input value of a function have more than one output value (i.e. x: y - y1)?






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






21. Which is greater? 200x^295 or 10x^294?






22. What is a subset?






23. 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?






24. Employee X is paid 19.50 per hour no matter how many a week. Employee Y earns 18 for the first 40 and 1.5 the hourly wage for every hour after that. If both earned the same amount and worked the same in one week - how many did each work?






25. How many multiples does a given number have?






26. What is a parabola?






27. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






28. What is the measure of an exterior angle of a regular pentagon?






29. 413.03 x 10^(-4) =






30. Which quandrant is the lower right hand?






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






32. Factor x^2 - xy + x.






33. 6w^2 - w - 15 = 0






34. Convert 0.7% to a fraction.






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






36. 3/8 in percent?






37. 1/8 in percent?






38. Order of quadrants:






39. (6sqrt3) x (2sqrt5) =






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






41. Length of an arc of a circle?






42. Formula for the area of a circle?






43. The slope of a line perpendicular to (a/b)?






44. Pi is a ratio of what to what?

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45. 10^6 has how many zeroes?






46. 5/8 in percent?






47. Describe the relationship between the graphs of x^2 and (1/2)x^2






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






49. 50 < all primes< 60






50. Can you simplify sqrt72?