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






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






3. The symbol > is read as _________.






4. 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.






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






6. 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.






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






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






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






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






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






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






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






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






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






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






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






18. The symbol ≤ is read as __________ .






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






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






22. ______________ 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.






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






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






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






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






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






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






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






30. 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.






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






32. 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.






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






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






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






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






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






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






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






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






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






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






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






44. 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.






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






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






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






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






49. The symbol < is read as ________ .






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







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