Math Vocab for Fourth Graders
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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| in a mathematical sentence, this is a symbol used to represent an unknown number or a number that varies (hint: it is usually represented by a lowercase letter) | variable
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| to rewrite a fraction as an equivalent fraction with a smaller numerator and denominator, (to put a fraction in simplest form) | simplify
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| the difference between the greatest number and the least number in a set | range
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| a solid three-dimensional shape with two identical parallel bases, and all other faces formed by rectangles or parallelograms | prism
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| lines going in the same direction that are always the same distance apart, these never meet or cross | parallel lines
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| the number found by dividing the sum of a set of numbers by the number of addends (this is also known as the AVERAGE) | mean
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| a unit fraction representing one of one hundred equal parts, this is written as 1/100 | hundredths
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| the amount of time that passes from the start of an activity to the end | elapsed time
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| used to show position in a coordinate plane or map. An example is (1,3) | coordinates
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| a face of a three-dimensional polyhedron by which the figure is measured or classified (a cylinder or cone has a circular one of these) | base
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| the transformation of a figure by moving it without turning or flipping it in any direction (hint: fancy word for a slide) | translation
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| a triangle with no equal sides (all lengths are different) | scalene
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| the distance from the middle of a circle to any point on the circle (half the diameter) | radius
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| a number greater than 1 that has exactly 2 factors (it only has a factor of 1 and itself) | prime number
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| a number less than 0, but not a fraction or a decimal (it uses a negative sign) | negative integer
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| a triangle with two congruent sides (2 sides are the same length) | isosceles
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| one or more numbers, variables, or numbers and variables, with one or more operations. ex: (12-4) + 3 | expression
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| the height, length, or width or a figure or object (The term 3-D is used to describe objects with three of these) | dimension
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| numbers that have three or more factors | composite number
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| a real or imaginary reference line, it can be horizontal or vertical | axis
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| a unit fraction representing one of a thousand equal parts of a whole, it is written 1/1000 | thousandth
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| the turning of a figure around a given point | rotation
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| any quarter of a plane divided by an x and y axis (this forms a quarter of a circle) | quadrant
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| the value of a digit as determined by its place in a number, an example of this is the tens place | place value
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| the number that occurs most frequently in a set of data | mode
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| lines that meet at a point, these look like an X | intersecting lines
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| to find the approximate value or measurement of something (you can do this to guess how many marbles are in a jar) | estimate
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| the distance across a circle through its middle, it is the longest chord of a circle | diameter
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| a number divisible by all of the denominators of a set of fractions being considered (the number 30 is this for 1/6 and 1/15) | common denominator
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| an addition and multiplication rule stating that no matter how numbers are grouped, the answer will always be the same (3 + 2 is the same as 2 + 3) | associative property
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| a unit fraction representing one of ten equal parts of a whole, it is written as 1/10 | tenth
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| the transformation of a figure by reflecting it over a line, creating a mirror image of the figure (sometimes called a flip) | reflection
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| that chance that a particular outcome will occur | probability
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| lines that lie on the same plane that intersect to form right angles | perpendicular lines
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| the number in the middle of a set of data arranged in order from least to greatest or greatest to least | median
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| a shape that has equal sides | equilateral
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| a number system based on 10 | decimal system
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| the distance around a circle | circumference
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| a number to be added to another | addend
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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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.
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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Created by:
fritzsar
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