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






3. The opposite of a positive integer is 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. A _________ is a symbol - usually a letter - used to represent a number.






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






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






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






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






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






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






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






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






14. The set of all possible outcomes is _____________.






15. 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.






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






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






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






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






20. The symbol > is read as _________.






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






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






23. The symbol ≥ is read as ______________.






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






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






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






27. ______________ 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.






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






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






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






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






32. 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.






33. 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).






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






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






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






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






38. The symbol ______ means percent.






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






40. 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.






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






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






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






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






45. The symbol < is read as ________ .






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






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






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






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






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