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






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






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






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






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






6. 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.






7. The set of all possible outcomes is _____________.






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






9. In a power - the number of times the base is used as a factor is the ________ . In 5³ - the exponent is 3.






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






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






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






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






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






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






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






17. ______________ 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.






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






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






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






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






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






23. 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.






24. The symbol < is read as ________ .






25. The symbol ≥ is read as ______________.






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






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






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






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






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






31. 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.






32. Use number lines to ________ two decimals.






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






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






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






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






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






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






39. The symbol ______ means percent.






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






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






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






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






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






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






46. The symbol > is read as _________.






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






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






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






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