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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 the comparison of two numbers by division.






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






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






4. To add or subtract fractions with unlike denominators - you need to change the fractions to equivalent fractions with ____________ before you find the sum or difference.






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






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






7. 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.






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






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






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






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






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






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






14. 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.






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






16. The symbol < is read as ________ .






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






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






19. ______________ 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.






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






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






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






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






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






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






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






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






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






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






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






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






33. The symbol ≥ is read as ______________.






34. The symbol ______ means percent.






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






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






37. 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.






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






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






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






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






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






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






44. 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).






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






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






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 special kind of bar graph that shows frequency of data.






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






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