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






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






3. ______________ 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.






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






5. 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).






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






7. The set of all possible outcomes is _____________.






8. 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.






9. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






24. The symbol > is read as _________.






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






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






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






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






29. 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.






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






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






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






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






34. Use number lines to ________ two decimals.






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






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






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






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






39. If a figure can be divided in half by a line so that the two halves match each other - the figure is __________ .






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






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






42. 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.






43. The symbol < is read as ________ .






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






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






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






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






48. The symbol ≥ is read as ______________.






49. 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.






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