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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. If two lines are parallel - the slope of one is






2. The decrease from x to y






3. A¹






4. (sum of individual quantities or measures/ total number of quantities or measures)






5. Any integer is divisible by 5 if






6. x(y+z)






7. If b²-4ac < 0 - there are






8. Any integer is divisible by 10 - if






9. x + (n/100)x






10. 1. square all choices given 2. select the closes choice that is too large and the one that is too small. 3. find the average of the two choices (not of the squares) 4. square the average - if it is greater than the original number - choose the lower






11. 5-12-13






12. The product of an even number of negative numbers is






13. Any arc length is less than






14. V3






15. The difference between x and y






16. If under the operation - any two members of the set constitute an element of the set ( * the product of the elements multiplied by themselves must also be an element of the set*)






17. A chord through the center of the circle






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






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






20. 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.






21. Sin 60°






22. Side a +side b of a ? is






23. 1. solve the equation or inequality 2. use ONLY the solutions which satisfy the condition required - the set of all x such that x is greater than or equal to 10 R= {x: x=10}






24. 3-4-5






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






26. x +z > y+z






27. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)






28. Area= 1/2bh perimeter= a + b+ c hypotenuse= c²= b²+a²






29. All three sides and all three angles are equal






30. V2/2- v2/2 - 1 (90-45-45)






31. y years from now






32. 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.






33. Between 90° and 180°






34. Square of hypotenuse = c² = a²+b² length of hypotenuse = c= va²+vb²






35. 1/y-1/x x -y ? 0






36. 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






37. Volume= 4/3?r² surface area= 4?r²






38. Intersect at only one point - the point is the only solution to the pair of equations






39. x > y or y< x






40. Between 180° and 360°






41. A/A¹ = B/B¹= C/C¹






42. In a triangle - if ?c(interior angle in triangle) and ?d(exterior angle out of triangle) are supplmentary angles - than ?a and ?b are remote interior angles to <d - thus - a +b+c = 180 (triangle) c+d = 180 (supplementary angles)






43. All even numbers end in the digits of






44. 180°






45. Wx<wy






46. All sides are equal and all of whose angles are equal. 1. can be inscribed in a circle and can be circumscribed about another circle. 2. each angle is equal to the sum of the angles divided by the number of sides 180(n-2)°/n.






47. The percent decrease from x to y ( y<x)






48. 1. subtract each number from the average of the numbers 2. square the result of each of the numbers 3. add all those results and then divide by how many numbers you originally had. 4. take the square root of that result






49. Is the relation with ALL ordered pairs REVERSED.






50. B²-4ac = 0 there is