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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 _________ 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).






2. 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.






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






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






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






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






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






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






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






10. To ___________ - multiply the numerators and then multiply the denominators. Write the product in lowest terms.






11. 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.






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






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






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






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






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






17. The symbol ______ means percent.






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






19. The symbol < is read as ________ .






20. The symbol ≥ is read as ______________.






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






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






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






24. 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.






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






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






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






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






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






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






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






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






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






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






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






36. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






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






47. 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.






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






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






50. The symbol ≤ is read as __________ .