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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 symbol ≤ is read as __________ .






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






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






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






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






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






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






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






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






10. 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.






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






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






13. The symbol > is read as _________.






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






15. The symbol ≥ is read as ______________.






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






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






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






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






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






21. 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.






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






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






24. 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.






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






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






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






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






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






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






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






32. 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).






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






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






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






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






37. 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.






38. Use number lines to ________ two decimals.






39. The symbol ______ means percent.






40. 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.






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






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






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






44. The set of all possible outcomes is _____________.






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






46. ______________ 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.






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






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






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






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







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