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Important Math Facts

Subject : 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 surface area of a __________ is the sum of the areas of two circles and a rectangle.






2. A _______ is a ratio that compares a number to 100.






3. Together - the x coordinate and y coordinate form an ___________.






4. The ________ of an angle is the common endpoint of the rays forming the angle.






5. Two angles are ___________ if the sum of their measures is 90°.






6. The _________ states that multiplying a sum by a number is the same as multiplying each addend by that number and then adding the two products. For example - 3(8 + 2) = (3 x 8) + (3 x 2).






7. The symbol ≥ is read as ______________.






8. An approximation of pi is 3.14 - or _______ .






9. Both addition and multiplication are __________ . This means that grouping addends or factors will not change the sum or product.






10. Use number lines to ________ two decimals.






11. If a figure can be divided in half by a line so that the two halves match each other - the figure is __________ .






12. A diagram used to show the total number of possible outcomes in a probability experiment is called a _____________.






13. Both addition and multiplication are _________ . This means that order doesnft change the sum or product.






14. A _______ is a comparison of two numbers with different units of measure.






15. The ______________ are the numbers of pieces of data that can represent the whole set of data. These common measures of central tendency are mean - median - and mode.






16. The symbol < is read as ________ .






17. The ___________ of a circle is equal to π times its diameter or π times twice its radius. C = π d or C = 2 π r.






18. An ___________ is a combination of numbers - variables - and operations.






19. To __________ an algebraic expression means to substitute a value for the variables and apply the rules for order of operation.






20. Similar figures have the same shape but different sizes. The symbol ~ means _________ .






21. Use __________ to compare two decimals - using the order symbols.






22. ___________ is a number that can be written using an exponent. For example - 3² means three to the second power.






23. The symbol > is read as _________.






24. In a power - the number used as a factor is the base. In 10³ - the ________ is 10. That is - 10³ = 10 X 10 X 10.






25. To add mixed numbers with unlike denominators - write equivalent fractions with a ___________ . Add the whole numbers and add the fractions.






26. Prime factorization can be written using ________ . For example - 2 x 2 x 3 = 2² x 3






27. _________ integers are the same distance from zero in opposite directions on the number line.






28. A _________ has six rectangular faces. To find the surface area - find the sum of the areas of the six faces.






29. The line or the fold is called the __________ .






30. To _____________ - express the mixed numbers as improper fractions - multiply - and simplify the results.






31. An ________ is a mathematical sentence that contains the equal sign.






32. ______________ are two events in which either one or the other must take place - but they cannot both happen at the same time. The sum of their probabilities is one.






33. To add or subtract fractions with unlike denominators - you need to change the fractions to equivalent fractions with ____________ before you find the sum or difference.






34. The opposite of a positive integer is a ________ .






35. A _________ is a randomly-selected group that is used to represent a whole population.






36. To ______________ - if the denominators are unlike - write equivalent fractions with a common denominator. Subtract the fractions first - and rename if necessary. Then subtract the whole numbers. Simplify if possible.






37. In a __________ - an object slides from one position to another without changing its size or shape.






38. _________ - _________ - and_______may be written by first writing each one as a fraction with a denominator of 100.






39. The _________ of a circle is twice the length of the radius.






40. The rules to follow when more than one operation is used are called the ___________.






41. A figure that can be rotated 180° about a point so that it matches the original figure has ______ .






42. The ____________ of a circle is always a little more than three times the diameter.






43. A ___________is for organizing a set of data that shows the number of times each item or number appears.






44. A _____________ is a system used to condense a set of data where the greatest place value of the data forms the stem and next greatest place value forms the leaves.






45. Instead of writing large numbers with all the zeros - you can use _________ . For example - 4 -250 -000 -000 = 4.25 x 10⁹.






46. The set of all possible outcomes is _____________.






47. A _________ is a special kind of bar graph that shows frequency of data.






48. When two or more numbers are multiplied - each number is called a _________ .






49. Two angles are ___________ if the sum of their measures is 180°.






50. The symbol ≤ is read as __________ .