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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. 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 -






2. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)






3. Any integer is divisible by 3 - if






4. The sume of x and y






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






6. In a triangle - the greatest angles lies






7. Write down every member in one or both of the sets - the union of two sets is a new set. the union of set A and B is written as A?B






8. Between 90° and 180°






9. Is the set of the first components of the ordered pairs.






10. Diagonal= sv2






11. x > y or y< x






12. The increase from x to y






13. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)






14. Between 180° and 360°






15. The decrease from x to y






16. Is always a right angle.






17. Angle whose sides are two chords. The vertex of the angles lies on the circumference of the circle. The number of degrees of the angle is equal to 1/2 the intercepted arc






18. Are the lines that bisect and are perpendicular to each of the three sides. The point where they meet is the center of the circumscribed circle.






19. x younger than y






20. In transversals






21. Is - as - was - has - cost






22. y years from now






23. Area= bh perimeter= 2a +2b






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






25. (x+y) (x-y)






26. Any arc length is less than






27. Sin 30°






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






29. Area= 1/2bh perimeter= a+b+c






30. Volume= e(edge)³ surface area= 6e²






31. x + y






32. The angles opposite to sides that are equal in length have






33. Parallel and never intersect - they have no solution at all - they are parallel with the same slope






34. 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.






35. Angle whose sides are two radii of the circle. The vertex of this angle is the center of the circle. The number of degrees is equal to the amount of arc length that the radd intercept.






36. Two tangents to a circle from the same point outside of the circle are always






37. ?






38. ?






39. Any line that connects two points on a circle.






40. The percent increase from x to y (y>x)






41. A°






42. If b²-4ac < 0 - there are






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






44. Ax= by + C






45. 1-v3- 2 (90-30-60)






46. V10






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






48. x+w> y+z






49. 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)






50. 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.







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