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






2. ______________ 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.






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






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






5. The symbol > is read as _________.






6. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






16. 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.






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






18. To add ____________ with common denominators - write the sum of the numerators over the common denominators. Then add the whole numbers.






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






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






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






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






23. To ____________ - replace the divisor with its reciprocal and then multiply to get your answer.






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






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






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






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






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






29. The symbol ≤ is read as __________ .






30. The symbol ______ means percent.






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






32. 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.






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






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






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






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






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






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






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






40. 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.






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






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






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






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






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






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






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






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






49. The symbol < is read as ________ .






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