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






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






3. 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.






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






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






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






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






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






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






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






11. 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.






12. 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.






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






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






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






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






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






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






19. 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.






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






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






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






23. Use number lines to ________ two decimals.






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






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






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






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






28. 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.






29. The set of all possible outcomes is _____________.






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






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






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






33. The symbol < is read as ________ .






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






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






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






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






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






39. ______________ 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.






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






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






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






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






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






45. The symbol > is read as _________.






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






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






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






49. The symbol ≥ is read as ______________.






50. The symbol ≤ is read as __________ .