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






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






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






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






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






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






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






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






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






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






11. 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.






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






13. The symbol ______ means percent.






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






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






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






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






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






19. 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).






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






21. 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.






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






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






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






25. ______________ 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.






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






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






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






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






30. 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.






31. The symbol < is read as ________ .






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






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






34. Use number lines to ________ two decimals.






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






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






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






38. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






47. The symbol > is read as _________.






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






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. The opposite of a positive integer is a ________ .