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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 proportion with one fraction with a denominator of 1.






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






3. 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.






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






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






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






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






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






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






10. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






18. 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).






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






20. 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.






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






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






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






24. The symbol > is read as _________.






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






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






27. The symbol ≤ is read as __________ .






28. ______________ 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.






29. 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.






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






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






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






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






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






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






36. The symbol < is read as ________ .






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






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






39. 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.






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






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






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






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






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






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






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






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






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






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