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






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






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






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






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






6. The symbol ≥ is read as ______________.






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






8. 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.






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






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






11. 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.






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






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






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






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






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






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






18. ______________ 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.






19. 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).






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






21. The set of all possible outcomes is _____________.






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






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






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






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






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






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






28. 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.






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






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






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






32. The symbol ______ means percent.






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






34. 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.






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






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






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






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






39. The symbol > is read as _________.






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






41. Use number lines to ________ two decimals.






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






43. 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.






44. The symbol < is read as ________ .






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






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






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






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






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






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







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