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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. 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.






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






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






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






5. 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.






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






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






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






9. 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).






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






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






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






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






14. The set of all possible outcomes is _____________.






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






16. 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.






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






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






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






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






21. 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.






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






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






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






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






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






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






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






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






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






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






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






33. The symbol ≥ is read as ______________.






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. 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.






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






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






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






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






41. The symbol > is read as _________.






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






43. The symbol ______ means percent.






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






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






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






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






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






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






50. The symbol ≤ is read as __________ .