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






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






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






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






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






6. The symbol ______ means percent.






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






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






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






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






11. The symbol < is read as ________ .






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






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






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






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






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






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






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






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






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






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






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






23. The set of all possible outcomes is _____________.






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






25. 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.






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






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






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






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






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






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






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






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






34. 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.






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






36. 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.






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






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. 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 symbol ≥ is read as ______________.






41. The symbol > is read as _________.






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






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






44. The symbol ≤ is read as __________ .






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






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






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






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






49. 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.






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