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






2. 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.






3. 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.






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






5. 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.






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






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






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






9. Use number lines to ________ two decimals.






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






11. 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).






12. The set of all possible outcomes is _____________.






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






14. The symbol > is read as _________.






15. 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.






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






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






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






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






20. ______________ 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.






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






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






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






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






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






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






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






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






29. 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.






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






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






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






33. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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






41. The symbol < is read as ________ .






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






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






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






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






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






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






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






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






50. The symbol ______ means percent.