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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. ______________ 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.






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






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






4. Use number lines to ________ two decimals.






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






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






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






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






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






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






11. The set of all possible outcomes is _____________.






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






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






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






15. The symbol < is read as ________ .






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






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






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






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






20. If a figure can be divided in half by a line so that the two halves match each other - the figure is __________ .






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






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






23. The symbol > is read as _________.






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






25. The symbol ≥ is read as ______________.






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






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






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






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






30. The symbol ______ means percent.






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






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






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






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






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






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






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






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






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






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






41. 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.






42. 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.






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






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






45. 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.






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






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






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






49. 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.






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







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