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






2. ______________ 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.






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






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






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






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






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






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






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






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






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






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






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






14. 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.






15. The symbol ≤ is read as __________ .






16. 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.






17. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






27. The symbol ≥ is read as ______________.






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






29. To _____________ - express the mixed numbers as improper fractions - multiply - and simplify the results.






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






31. 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.






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






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






34. The symbol ______ means percent.






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






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






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






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






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






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






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






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






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






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






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






46. 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).






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






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






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






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