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






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






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






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






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






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






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






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






9. The symbol ______ means percent.






10. 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.






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






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






13. 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).






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






15. ______________ 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.






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






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






18. 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.






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






20. The symbol > is read as _________.






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






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






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






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






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






26. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






35. The symbol ≤ is read as __________ .






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






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






38. 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.






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






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






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






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






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






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






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






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






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






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






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






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