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






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






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






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






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






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






7. The symbol ≥ is read as ______________.






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






9. 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.






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






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






12. 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.






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






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






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






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






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






18. 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).






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






20. 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.






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






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






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






24. The symbol ≤ is read as __________ .






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






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






27. The symbol < is read as ________ .






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






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






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






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






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






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






34. 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.






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






36. The symbol > is read as _________.






37. The symbol ______ means percent.






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






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






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






41. ______________ 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.






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






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






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






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






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






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






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






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






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