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






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






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






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






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






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






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






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






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






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






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






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






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






14. 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.






15. Use number lines to ________ two decimals.






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






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






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






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






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






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






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






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






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






25. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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. The line or the fold is called the __________ .






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






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






45. 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).






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






47. The set of all possible outcomes is _____________.






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






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






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