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






2. 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.






3. Use number lines to ________ two decimals.






4. The symbol < is read as ________ .






5. The symbol ≤ is read as __________ .






6. ______________ 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.






7. The symbol ______ means percent.






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






9. 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).






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






11. Make a __________ of an integer by using its placement on the number line.






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






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






14. The ________ is used to represent the ratio of distance on the map to the actual distance.






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






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






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






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






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






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






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






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






23. 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.






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






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






26. 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.






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






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






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






30. 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.






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






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






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






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






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






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






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






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






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






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






41. The _________ of an integer is the distance of the integer from zero.






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






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






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






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






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






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






48. 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.






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






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