Vocabulary Terms for 3rd Grade Math
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| How do I find the peRIMeter of a shape? | Measure the OUTSIDE of each side of the shape and total all of these measurements.
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| Congruent | Two shapes having the SAME SIZE and SAME SHAPE.
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| Hexagon | A polygon that has six sides
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| sum | The answer to addition
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| difference | The answer to subtraction
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| product | The answer to multiplication
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| quotient | The answer to division
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| place value | The value given to a digit by its place in a number.
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| symmetry | An object has line symmetry if one side is the MIRROR image of the other side.
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| octagon | a polygon that has eight sides
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| polygon | A closed plane figure formed using line segments that meet only at their endpoints.
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| array | an arrangement of objects in rows and columns
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| area | The number of square units needed to cover the INSIDE of a region or plane figure.
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| Round | To change the value of a number to one that is easier to work with. About, estimate
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| Multiplication | Repeated Addition
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| Division | Repeated Subtraction
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| acute angle | an angle that is greater than 0 degrees, but less than 90 degrees.
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| right angle | an angle that is exactly 90 degrees
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| obtuse | an angle that is more than 90 degrees,but less than 180 degrees.
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| probability | the likelihood that an event will occur
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| straight angle | an angle that is exactly 180 degrees. A straight set of points that extend in opposite directions without ending.
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| quadrilateral | a four-sided polygon
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| parallel lines | two or more lines that have no points in common, i.e. they do not cross at any point.
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| parallelogram | A quadrilateral with four sides in which each pair of opposite sides are parallel and equal in length.
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| digit | a symbol used to write numbers
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| expanded notation | a way of writing a number that shows the sum of the value of the digits
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| equal to | having the same value
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| standard form | the usual way of writing a number that shows only its digits, no words
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| pattern | a series of numbers of figures that follows a rule
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| array | Objects or symbols displayed in rows of the same length and columns of the same length. The length of a row might be different from the length of a column.
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| pentagon | a polygon with five sides
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| pictograph | A graph that compares data by using picture symbols.
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| bar graph | A graph that compares data by using bars of different lengths or heights to show the values.
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| capacity | The amount a container can hold, measured in units of dry or liquid measure.
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| volume | The number of cubic units needed to fill a 3-dimensional figure or solid figure.
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| vertex (vertices) | A POINT(s) of a 2- or 3-dimensional figure where two or more edges of the figure meet
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| edge | The LINE segment where two faces of a solid figure MEET.
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| estimate | A number close to an exact value. An estimate indicates about how much.
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| even number | A number that ends with 0, 2, 4, 6, or 8.
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| cylinder | A 3-dimensional figure having two circular bases and a curved surface connecting the two bases.
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| ordered pair | A pair of numbers that gives the location of a point on a map or grid.
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| trapezoid | A quadrilateral with exactly one pair of parallel sides.
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| square | A rectangle with four congruent sides.
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| sphere | A 3-dimensional figure that has the shape of a round ball.
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| rectangle | A quadrilateral with four right angles; opposite sides are equal and parallel.
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| rhombus | A parallelogram with four sides of the same length.
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| quarter hour | One-fourth of an hour or 15 minutes.
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| fraction | A number that represents part of a whole or part of a set.
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| odd number | A number that is not divisible by 2, such a number has 1, 3, 5, 7, or 9 in the ones place.
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| numerator | The number above the bar in a fraction; the part of the fraction that tells how many of the equal parts are being used.
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| denominator | The bottom number in a fraction. This number represents the TOTAL PARTS.
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| factor | A number that divides a whole number evenly. Also a number that is multiplied by another number.
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| equivalent | having the same value
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| face | The FLAT PART of a 3-dimensional figure. Example: A square is a face of a cube.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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