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






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






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






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






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






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






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






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






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






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






11. ______________ 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.






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






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






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






15. 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.






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






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






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






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






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






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. Use number lines to ________ two decimals.






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






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






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






26. The symbol < is read as ________ .






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






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






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






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






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






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






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






34. The symbol ≤ is read as __________ .






35. The symbol > is read as _________.






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






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






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






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






40. The set of all possible outcomes is _____________.






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






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






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






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






45. 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.






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






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






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






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






50. 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.