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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. Sin 30°






2. The product of an odd number of negative numbers is






3. (amount of increase/original amount) x 100






4. 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.






5. ?






6. The product of x and y






7. Sum of two even numbers is






8. | |






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






10. 1-1-v2 (90-45-45)






11. y years ago






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






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






14. When two parallel lines are crossed by a third straight line (transversal) - then






15. x younger than y






16. Volume= 4/3?r² surface area= 4?r²






17. y<x






18. (x+y) (x-y)






19. x²






20. (amount of decrease/original amount) x 100






21. x(y-z)






22. xw> yz






23. Area= s² perimeter= 4s






24. Sum of two odd numbers is






25. What % of m is n






26. All even numbers end in the digits of






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






28. Product of two odd numbers is






29. 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






30. A+b=c+ d=d






31. Product of an even number and any other number is






32. 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






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






34. Wx>wy






35. Of






36. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases






37. 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)






38. 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






39. If two lines are perpendicular - the slope of one is the






40. x - (n/100)x






41. Angles that equal 180 degrees






42. 2k + 1






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






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






45. 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)






46. Sin 45°






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






48. 1/2bh






49. Any integer is divisible by 3 - if






50. x/100