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






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






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






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






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






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






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






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






9. ______________ 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.






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






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






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






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






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






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






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






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






18. 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.






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






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






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






22. The symbol ≤ is read as __________ .






23. Use number lines to ________ two decimals.






24. The symbol > is read as _________.






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






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






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






28. The symbol ≥ is read as ______________.






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






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






31. 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.






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






33. The symbol < is read as ________ .






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






35. The set of all possible outcomes is _____________.






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






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






38. The symbol ______ means percent.






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






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






41. 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.






42. 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).






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






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






45. 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.






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






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






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






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






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







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