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GRE Math Strategies

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. Is drawn from the vertices perpendicular to the opposite sides. The lengths of these lines are useful in calculating the area of the trinagle since the area of the triangle is 1/2bh and the height and the _____are the same.






2. Side a +side b of a ? is






3. Sum of two even numbers is






4. Sin 60°






5. Area= 1/2h(b1+b2) perimeter= b1+b2+c+d






6. (x+y) (x-y)






7. x>z






8. 1. determine a rough approximation of the square root of the number. 2. divide the number by all the primes that are less than the approx square root. If the number is not divisible by ANY of the these primes - then it is prime. If it IS divisible -






9. 3(4+1)= 3 x 4 + 3 x 1






10. ?






11. Every set is a subset of






12. Any integer is divisible by 3 - if






13. Write down every member that the two sets have in common. The intersection of the sets A and B is a set written AnB






14. All angles are right angles and diagonals are equal 1.each pair of opposite sides are equal 2. the diagonals bisect eachother 3. the opposite angles are equal 4. one diagonal divides it into two congruent triangles and two diagonals divides it into






15. ?if y angle< x angle - then






16. x + y






17. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)






18. 180°






19. Any integer is divisible by 10 - if






20. x= -b + vb²-4ac/2a and x = -b - vb²-4ac/2a






21. Product of two odd numbers is






22. A chord through the center of the circle






23. The point where the line crosses the x-axis - y will always = 0 in this case






24. Any integer is divisible by 8 if






25. x/100






26. V2






27. A/A¹ = B/B¹= C/C¹






28. x>0 and y<0 or x<0 and y >0






29. x+w> y+z






30. Is a subset of every set






31. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)






32. Between 180° and 360°






33. x +z > y+z






34. 8-15-17






35. All three sides and all three angles are equal






36. Diagonals divide into 6 equilateral triangles - the sides are equal to the sides of the ________. if inscribed in a circle - the length of each side is equal to the length of the radius of the circle.






37. x(y-z)






38. The decrease from x to y






39. R²






40. x older than y






41. If an equation can be put into the form y= mx +b - then






42. (x1+ x2/2) - (y1+y2/2) Each coordinate of the midpoint is equal to the average of the corresponding cordinates of the endpoints






43. Between 90° and 180°






44. Is always a right angle.






45. The product of x and y






46. N= combinations taken (order does not matter) r= rate at a time nCr or C(n -r) = (n)!/(r)! (remember to cancel out common numbers)






47. The sum of any two sides of a triangle is greater than






48. The measure of an interior angle is






49. One angle is equal 90° and the other two angles are equal to the sum of 90°






50. When the elements of a set are ordered pairs