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






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






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






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






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






6. 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.






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






8. 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.






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






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






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






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






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






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






15. The symbol ______ means percent.






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






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






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






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






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






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






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






23. 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.






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






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






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






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






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






32. The symbol ≤ is read as __________ .






33. ______________ 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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







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