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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 _________ states that multiplying a sum by a number is the same as multiplying each addend by that number and then adding the two products. For example - 3(8 + 2) = (3 x 8) + (3 x 2).






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






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






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






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






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






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






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






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






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






11. 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.






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






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






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






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






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






17. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






35. The symbol > is read as _________.






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






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






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






39. The set of all possible outcomes is _____________.






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






41. ______________ 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.






42. 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.






43. The symbol < is read as ________ .






44. 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.






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






46. 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.






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






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






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






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







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