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






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






3. The symbol ≤ is read as __________ .






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






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






6. 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).






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






8. 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.






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






10. ______________ 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.






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






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






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






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






15. The symbol ≥ is read as ______________.






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






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






18. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






36. The symbol < is read as ________ .






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






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






39. The symbol ______ means percent.






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






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






42. 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.






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






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






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






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






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






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






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






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