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






2. The symbol > is read as _________.






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






4. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






28. The symbol < is read as ________ .






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






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






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






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






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






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






35. 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).






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






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






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






39. 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.






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






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






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






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






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






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






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






47. The symbol ≥ is read as ______________.






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






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






50. The symbol ≤ is read as __________ .