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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 ≤ is read as __________ .






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






3. 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.






4. 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.






5. The set of all possible outcomes is _____________.






6. 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.






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






8. Use number lines to ________ two decimals.






9. The symbol < is read as ________ .






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






11. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






33. The symbol > is read as _________.






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






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






36. 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.






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






38. ______________ 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.






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






40. The symbol ______ means percent.






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






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






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






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






45. The symbol ≥ is read as ______________.






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






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






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






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






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