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






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






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






4. The set of all possible outcomes is _____________.






5. The symbol < is read as ________ .






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






7. 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.






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






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






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






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






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






13. The symbol ______ means percent.






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






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






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






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






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






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






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






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






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






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






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






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






27. 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.






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






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






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






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






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






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






34. 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).






35. The symbol ≤ is read as __________ .






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






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






38. 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.






39. The symbol > is read as _________.






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






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






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






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






44. 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.






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






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






47. Use number lines to ________ two decimals.






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






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






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