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






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






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






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






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






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






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






8. 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.






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






10. 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.






11. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






19. 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.






20. 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.






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






22. ______________ 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.






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






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






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






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






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






28. The symbol ≤ is read as __________ .






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






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






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






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






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






34. 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.






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






36. The symbol ______ means percent.






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






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






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






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






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






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






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






44. The symbol > is read as _________.






45. 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.






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






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






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






49. Use number lines to ________ two decimals.






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