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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. 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.






2. The symbol > is read as _________.






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






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






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






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






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






8. 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.






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






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






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






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






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






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






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






16. 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.






17. Use number lines to ________ two decimals.






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






19. The symbol < is read as ________ .






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






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






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






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






24. The symbol ≤ is read as __________ .






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






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






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






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






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






30. 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.






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






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






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






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






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






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






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






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






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






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






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






42. ______________ 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.






43. 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.






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






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






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






47. The symbol ≥ is read as ______________.






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






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






50. The symbol ______ means percent.







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