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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. The set of all possible outcomes is _____________.






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






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






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






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






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






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






9. 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.






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






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






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






13. The symbol < is read as ________ .






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






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






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






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






18. 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.






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






20. The symbol > is read as _________.






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






22. ______________ 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.






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






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






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






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






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






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






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






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






31. 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.






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






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






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






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






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






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






38. 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.






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






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






41. The symbol ______ means percent.






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






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






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






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






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






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






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






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






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