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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 opposite of a positive integer is a ________ .






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






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






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






5. 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).






6. The symbol ______ means percent.






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






8. 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.






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






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






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






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






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






14. The symbol > is read as _________.






15. Use number lines to ________ two decimals.






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






17. The set of all possible outcomes is _____________.






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






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






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






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






22. 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.






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






24. 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.






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






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






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






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






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






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






31. 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.






32. The symbol ≤ is read as __________ .






33. ______________ 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.






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






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






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






37. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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