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






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






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






4. ______________ 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.






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






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






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






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






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






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






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






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






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






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






15. The symbol > is read as _________.






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






17. 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.






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






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






20. The symbol < is read as ________ .






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






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






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






24. 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).






25. The symbol ≤ is read as __________ .






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






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






28. The set of all possible outcomes is _____________.






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






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






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






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






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






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






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






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






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






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






39. 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.






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






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






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






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






44. 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.






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






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






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






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






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






50. Use number lines to ________ two decimals.