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






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






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






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






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






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






7. 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.






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






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






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






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






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






13. The symbol ≥ is read as ______________.






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






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






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






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






18. Use number lines to ________ two decimals.






19. 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).






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






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






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






23. The symbol < is read as ________ .






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






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






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






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






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






29. 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.






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






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






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






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






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






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






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






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






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






39. The symbol ______ means percent.






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






41. 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.






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






43. 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.






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






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






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






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






49. 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.






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