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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. 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.






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. Use number lines to ________ two decimals.






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






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






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






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






8. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






23. The symbol ≤ is read as __________ .






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






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






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






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






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






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






30. ______________ 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.






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






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






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






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






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






36. The symbol > is read as _________.






37. The symbol ______ means percent.






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






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






40. 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.






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






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






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






44. 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).






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






46. 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.






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






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






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






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