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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. 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.






2. 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.






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






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






5. The set of all possible outcomes is _____________.






6. The symbol ≥ is read as ______________.






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






8. ______________ 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.






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






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






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






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






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






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






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






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






17. 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).






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






19. The symbol < is read as ________ .






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






21. The symbol ≤ is read as __________ .






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






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






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






25. 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.






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






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






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






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






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






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






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






33. 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.






34. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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