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






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






3. 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.






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






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. The set of all possible outcomes is _____________.






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






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






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






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






11. The symbol > is read as _________.






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






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






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






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






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






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






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






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






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






22. The symbol ______ means percent.






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






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






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






26. 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).






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






28. 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.






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






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






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






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






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






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






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






36. ______________ 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.






37. The symbol ≤ is read as __________ .






38. The symbol < is read as ________ .






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






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






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






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






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






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






45. Use number lines to ________ two decimals.






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






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






48. 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.






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






50. The symbol ≥ is read as ______________.