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5th Grade Math 2
| Term | Definition |
|---|---|
| acute | an angle less than 90 degrees |
| area | the number of squares required to cover a flat surface |
| associative | a property that states you can change the grouping of numbers and still get the same solution, when adding or multiplying |
| commutative | a property that states you can change the order of numbers and still get the same solution, when adding or multiplying |
| composite | a figure composed of two or more smaller figures that are combined |
| cups | a unit of capacity, equal to 8 ounces |
| decagon | a 10-sided polygon |
| decimal | a number that uses a decimal point and digits to represent tenths, hundredths, etc. |
| denominator | the bottom number in fraction, which tells how many parts make a whole |
| difference | the result of subtracting one number from another product |
| distributive | a property that states that multiplying a number by a group of numbers added together is the same as doing each multiplication separately |
| dividend | the number that gets divided |
| divisor | the number you divide by |
| elapsed time | the amount of time that has passed |
| equilateral | a triangle with congruent sides |
| equivalent | means "equal", such as two fractions that are equal |
| estimating | using values that are close enough, in order to make a simpler, mental math problem |
| evaluate | to find the value of |
| exponent | a number that tells how many times a number should be multiplied by itself |
| factors | numbers we can multiply together to get another number |
| feet | a unit of length, 3 of them make a yard |
| fluid ounces | a unit of capacity, 8 of them make 1 cup |
| fraction | part of a whole |
| gallon | a unit of capacity, equal to 4 quarts |
| hexagon | a 6-sided polygon |
| hours | a unit of time, 24 of them make 1 day |
| hundredth | one part of 100 equal parts |
| identity | a property that states any number times 1 or any number plus zero remains the same |
| inches | a unit of length, 12 of them make a foot |
| isosceles | a triangle with exactly 2 congruent sides |
| line plot | a graph that uses x's stacked in columns to display data |
| miles | a unit of length, equivalent to 5,280 feet |
| minutes | a unit of time, equal to 60 seconds |
| mixed number | a whole number combined with a fractional part |
| model | a visual representation or drawing |
| numerator | the top number in a fraction, which tells how many parts we have |
| obtuse | an angle greater than 90 degrees |
| octagon | an 8-sided polygon |
| operation | the mathematical step, such as adding, subtracting, multiplying, or dividing |
| ounces | a unit of weight, 16 of them equal 1 pound |
| parallelogram | a quadrilateral with exactly 2 pairs of parallel sides |
| parentheses | grouping symbols |
| pentagon | a 5-sided polygon |
| pints | a unit of capacity, equal to 2 cups |
| polygon | a plane, closed figure, with straight sides |
| pounds | a unit of weight, equal to 16 ounces |
| quadrilateral | a 4-sided polygon |
| quarts | a unit of capacity, 4 of them make a gallon |
| quotient | the result of dividing one number by another |
| rectangle | a quadrilateral with 4 right angles |
| regular | a polygon with congruent sides and congruent angles |
| remainder | the amount left over after division |
| renaming | calling a whole number by its fraction equivalent, such as 3/3 or 4/4 |
| rhombus | a quadrilateral with all congruent sides |
| right | an angle with a measure of exactly 90 degrees |
| rounding | making a number simpler, by choosing one less exact |
| scalene | a triangle with no congruent sides |
| seconds | a unit of time, 60 of them equal 1 minute |
| simplest form | when the top and bottom numbers of a fraction cannot be made any smaller |
| square | a quadrilateral with 4 congruent sides and 4 right angles |
| sum | the result of adding two or more numbers |
| tenth | one part of 10 equal parts |
| ton | a unit of weight, equal to 2,000 pounds |
| trapezoid | a quadrilateral with exactly 1 pair of parallel sides |
| triangle | a 3-sided polygon |
| unlike | denominators that are not the same |
| volume | the number of cubes required to fill a 3-dimensional figure |
| x-coordinate | the first coordinate in an ordered pair, which tells how far to move horizontally |
| y-coordinate | the second coordinate in an ordered pair, which tells how far to move vertically |
| yards | a unit of length, equal to 3 feet |
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