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






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






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






4. 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.






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






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






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






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






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






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






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






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






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






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






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






16. ______________ 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.






17. 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.






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






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






20. 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.






21. The symbol ≥ is read as ______________.






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






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






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






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






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






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






28. 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.






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






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






31. 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.






32. The symbol > is read as _________.






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






34. The set of all possible outcomes is _____________.






35. The symbol ______ means percent.






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






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






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






39. 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.






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






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






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






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






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






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






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






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






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