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






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






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






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






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






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






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






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






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






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






11. Use number lines to ________ two decimals.






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






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






14. 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.






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






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






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






18. A ___________ is a transformation that turns a line or shape around a fixed point.






19. The symbol ______ means percent.






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






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






22. The symbol ≤ is read as __________ .






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






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






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






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






27. 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.






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






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






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






31. 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.






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






33. The symbol > is read as _________.






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






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






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






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






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






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






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






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






42. ______________ 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.






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






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






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






46. 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.






47. 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.






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






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






50. The set of all possible outcomes is _____________.