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






2. M= y2-y1/x2-x1






3. 180°






4. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)






5. Angles that equal 180 degrees






6. M?A = m?D m?B= m?E m?C=m?F and a/d=b/e=c/f






7. V10






8. x less than y






9. 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)






10. If y²= x - then y =






11. R²






12. All odd numbers end in the digits of






13. 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.






14. 180°






15. Ax= by + C






16. Is - as - was - has - cost






17. 8-15-17






18. The decrease from x to y






19. 1-v3- 2 (90-30-60)






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






21. If ?B > ?A - then






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






23. Sin 45°






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






25. 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)






26. A chord through the center of the circle






27. 1. round each number being added to one more place than it is being asked. 2. add the rounded numbers. 3. round off the sum to the desired number of places






28. 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 -






29. 1/an






30. V2






31. x + y






32. x + (n/100)x






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






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






35. All three sides and all three angles are equal






36. When the elements of a set are ordered pairs






37. Sum of an odd and an even number is






38. x +z > y+z






39. x/100






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






41. x - (n/100)x






42. Distributive axiom - commutative axiom of addition and multiplication - associative axioms of addition and multiplication






43. 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






44. Volume= 4/3?r² surface area= 4?r²






45. x older than y






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






47. Wx<wy






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






49. 360°






50. (x-y)(x-y) = (x-y)²