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






2. ______________ 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.






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






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






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






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






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






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






9. 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.






10. 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.






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






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






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






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






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






16. The symbol ≤ is read as __________ .






17. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






33. 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.






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






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






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






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






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






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






40. Use number lines to ________ two decimals.






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






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






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






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






45. The symbol < is read as ________ .






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






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






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






49. 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.






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