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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 symbol ______ means percent.






2. A _________ is an equation that shows two ratios are equivalent.






3. 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.






4. In a__________ - an object flips over a line without changing its size or shape.






5. 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.






6. The symbol > is read as _________.






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






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






9. The symbol < is read as ________ .






10. The surface area of a __________ is the sum of the areas of two circles and a rectangle.






11. The set of ________ consists of the positive whole numbers - zero - and the opposites of the positive whole numbers.






12. To _________ - write the mixed numbers as improper fractions. Replace the divisor with its reciprocal and multiply.






13. A _______ is the comparison of two numbers by division.






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






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






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






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






18. When you add or subtract _________ that have the same or like denominators - you only add or subtract the numerators. The denominator stays the same.






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






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






21. 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.






22. A _________ is a symbol - usually a letter - used to represent a number.






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






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






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






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






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






28. 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.






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






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






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






32. To express a ______ as ________a - express the percent as a fraction with a denominator of 100 - then simplify.






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






34. The symbol ≥ is read as ______________.






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






36. To express a ______ as a _______ - rewrite the percent as a fraction with a denominator of 100 - and then express the fraction as a decimal.






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






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






39. To ___________ - multiply the numerators and then multiply the denominators. Write the product in lowest terms.






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






41. The __________ of a solid is the total area of its exterior surfaces.






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






43. 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).






44. Use number lines to ________ two decimals.






45. In a power - the number of times the base is used as a factor is the ________ . In 5³ - the exponent is 3.






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






47. ______________ 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.






48. A ___________ is a proportion with one fraction with a denominator of 1.






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






50. An _________ is a mathematical sentence that contains < - > - ≠- ≤ - or ≥ .