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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. The line or the fold is called the __________ .






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






3. 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.






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






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






6. ______________ 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.






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






8. 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).






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






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






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






13. The symbol > is read as _________.






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






15. Use number lines to ________ two decimals.






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






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






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






19. The symbol ≥ is read as ______________.






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






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






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






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






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






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






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






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






28. The symbol ≤ is read as __________ .






29. 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.






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






31. 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.






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






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






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






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






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






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






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






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






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






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






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






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






44. The symbol ______ means percent.






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






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






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






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






49. 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.






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