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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. 1/6 in percent?






2. 10^6 has how many zeroes?






3. x^6 / x^3






4. 5/6 in percent?






5. What is a minor arc?

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






7. Can you subtract 3sqrt4 from sqrt4?






8. Legs 6 - 8. Hypotenuse?






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






10. Write 10 -843 X 10^7 in scientific notation






11. Can you add sqrt 3 and sqrt 5?






12. 25^(1/2) or sqrt. 25 =






13. 4.809 X 10^7 =






14. (6sqrt3) x (2sqrt5) =






15. What is the common monomial factor in the expression 4(c^3)d - (c^2)(d^2) + 2cd?






16. 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?






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






18. What percent of 40 is 22?






19. 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?






20. Evaluate 4/11 + 11/12






21. Ratio of ages of Anna and Emma is 3:5 and of Emma and Nicolas is 3:5. What is the ratio of Anna to Nicholas' ages?






22. 40 < all primes<50






23. How many sides does a hexagon have?






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






25. 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)?






26. If a=-1 and b=3 - what is the value of (4(a^3)(b^2) - 12(a^2)(b^5)) / (16(a^3)(b^2))?






27. What is the percent formula?






28. 10<all primes<20






29. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






30. 5/8 in percent?






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






32. Whats the difference between factors and multiples?






33. (12sqrt15) / (2sqrt5) =






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






35. Reduce: 4.8 : 0.8 : 1.6






36. Evaluate and write as a mixed number: 2/7 - 3/21 + 2 & 4/14






37. Convert 0.7% to a fraction.






38. What is the slope of a horizontal line?






39. Which quandrant is the lower right hand?






40. What is the coefficient of the x^2 term in the product of (x + 1)(x + 2)(x -1)?






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






42. x^(-y)=






43. x^4 + x^7 =






44. a^0 =






45. sqrt 2(sqrt 6)=






46. A triangle is inscribed in a semi circle with legs 5 and 12. What is the circumfermence of the semicircle?






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






48. The ratio of the areas of two similar polygons is ...






49. What is the 'Range' of a function?






50. What does the graph x^2 + y^2 = 64 look like?