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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. x + (n/100)x






2. 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)






3. ? if a side < b side - then






4. The case where the two equations are equivalent (just two different forms of the same mathematical relation). Any point that satisfies either of the equations - automatically satisfies both






5. M=number of favorable ways n= total number of ways (two events occurring is the prob of the first times the prob of the second)






6. 1-v3- 2 (90-30-60)






7. 1. round the numbers being multiplied to one more place than it is being asked. 2. Multiply the rounded off numbers 3. round of product to desired number of places






8. 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}






9. ?






10. Area= s² perimeter= 4s






11. The product of x and y






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






13. V10






14. ?






15. V3






16. 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 -






17. Of






18. | |






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






20. Pairs of opposite angles formed by the intersection of two straight lines. always equal to each other






21. ?






22. Less than 90°






23. In transversals






24. x/100






25. ?






26. Set of solutions to an equation






27. 1/y-1/x x -y ? 0






28. Every set is a subset of






29. ?






30. 1-1-1 (60-60-60)






31. 9-40-41






32. M= y2-y1/x2-x1






33. A<x and x<b






34. A closed plane whose sides are straight lines. The sum of the angles is equal to 180(n-2) - where n is the number of sides.






35. Any integer is divisible by 10 - if






36. 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.






37. xw> yz






38. Volume=lwh surface area= 2wh + 2hl + 2lw






39. C times as old as john

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40. A/A¹ = B/B¹= C/C¹






41. Is the relation with ALL ordered pairs REVERSED.






42. When the elements of a set are ordered pairs






43. 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.






44. (x+y) (x-y)






45. Any integer is divisible by 6 if






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






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






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






49. Area= 1/4s² v3 perimeter= 3s altitude= 1/2s v3






50. Any integer is divisible by 5 if