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






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






3. Use number lines to ________ two decimals.






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






5. 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.






6. The symbol > is read as _________.






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






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






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






10. The symbol ______ means percent.






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






12. 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.






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






14. 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.






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






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






17. 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.






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






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






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






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






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






23. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






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






33. The _________ states that multiplying a sum by a number is the same as multiplying each addend by that number and then adding the two products. For example - 3(8 + 2) = (3 x 8) + (3 x 2).






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






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






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






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






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






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






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






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






42. 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.






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






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






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






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






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






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






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






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