## Test your basic knowledge |

# GRE High Frequency Math Terms

**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. a - b is equal to**

**2. How do you add or subtract fractions?**

**3. Explain the difference between a digit and a number.**

**4. List two odd behaviors of exponents**

**5. HIGH: Simplify this: v75/v27**

**6. What is one misleading characteristic of quadratic equations that will be exploited on the GRE?**

**7. HIGH: What must be true before a quadratic equation can be solved?**

**8. If something is possible but not certain - what is the numeric range of probability of it happening?**

**9. HIGH: What is a '30:60:90' triangle?**

**10. HIGH: What are the percentages for standard deviation?**

**11. What is the 'Third side' rule for triangles?**

**12. HIGH: What is the order of math operations - and the mnemonic to remember it?**

**13. Explain the special properties of zero.**

**14. What kind of triangle is this: has two sides of equal length - and a 90 degree angle?**

**15. Explain the difference between handling a permutation versus a combination.**

**16. Convert to a percentage: 4/5**

**17. An integer is divisible by 6 if...**

**18. In a coordinate system - identify the quadrants and describe their location.**

**19. What is the sum of any 'big' angle and any 'Small' angle?**

**20. HIGH: Define the formula for calculating slope.**

**21. What is the equation for a group problem?**

**22. Simplify this: v32**

**23. The three interior angles of a triangle add up to...**

**24. HIGH: Describe and define three expressions of quadratic equations - in both factored and unfactored forms. Know these cold.**

**25. HIGH: List the two most common side ratios for right triangles**

**26. What is the factored version of x -2xy + y ?**

**27. What is an 'equilateral' triangle?**

**28. When a pair of parallel lines is intersected by another line - two types of angles are formed. What are they?**

**29. HIGH: What is the Pythagorean theorem?**

**30. HIGH: Rough est. of v2 =**

**31. HIGH: What is the mode?**

**32. HIGH: Rough est. of v3 =**

**33. What is the formula to determine probability?**

**34. HIGH: What numbers does ETS hope you'll forget to consider - for quant comp questions?**

**35. HIGH: Explain a method for quickly comparing fractions with different denominators - to determine which is larger.**

**36. Probability Formula**

**37. How do you calculate the percentage of change?**

**38. An integer is divisible by 3 if...**

**39. An integer is divisible by 5 if...**

**40. HIGH: What is a 'Right isosceles' triangle?**

**41. HIGH: Explain the process to solve '56 is what percent of 80?'**

**42. What is the name of a line that extends from the center of a circle to the edge of a circle?**

**43. Diameter of a circle?**

**44. What number goes on the bottom of a probability fraction?**

**45. For a bell curve - what three terms might be used to describe the number in the middle?**

**46. What do combination problems usually ask for?**

**47. How do you calculate the probability of EITHER one event OR another event happening? (Probability of A or B)**

**48. Define the median of a set of numbers - and how to find it for an odd and even number of values in a set.**

**49. Define the range of a set of numbers.**

**50. HIGH: What is the factored version of (x+y)(x-y) ?**