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






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






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






4. The symbol ______ means percent.






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






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






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






8. 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.






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






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






11. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






27. The symbol ≤ is read as __________ .






28. 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.






29. The set of all possible outcomes is _____________.






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






31. ______________ 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.






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






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






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






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






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






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






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






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






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






41. 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.






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






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






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






45. 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.






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






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






48. The symbol ≥ is read as ______________.






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






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