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G5: Unit 4

Algebraic Thinking

QuestionAnswer
variable A letter or symbol used to represent a number.
order of operations The order in which one performs mathematical operations. GEMDAS (Grouping, Exponents, Multiplication/Division, Addition/Subtraction)
evaluate To find the value of a numerical or algebraic expression (solve)
parentheses A pair of symbols used to set apart parts of a problem so that those parts are done first, example ( ).
expression A math sentence containing only numbers, symbols, and operations (Ex: 3 x 2 + 4 - 1)
pattern Things that are arranged following a rule or rules.
brackets [ ], grouping symbols, A pair of symbols used to enclose sections of an expression.
braces A pair of symbols used to set apart parts of a problem so that those parts are done first, example { }.
unknown the answer that is not known
coordinate plane A coordinate system formed by the intersection of a horizontal number line, called the x-axis, and a vertical number line, called the y-axis.
coordinate A number that determines the position of a point in one direction on a grid.
x-axis the horizontal number line in a coordinate plane
y-axis the vertical number line in a coordinate plane
origin (0,0) The starting point on a graph.
x-coordinate The horizontal value in a pair of coordinates (how far along the point is). Always written first in an ordered pair (x, y).
y-coordinate The vertical value in a pair of coordinates (how far up or down the point is). Always written second in an ordered pair (x, y).
equation A mathematical sentence that shows that two expressions are equivalent.
first quadrant The region in which the x and y coordinates are both positive. This is the upper right section of a 4 part coordinate plane.
ordered pair A pair of numbers that can be used to locate a point on a coordinate plane. Ex: (3,5)
interval The distance between one number and the next on the scale of a graph.
axes Plural of axis. The x and y lines that cross at right angles to make a graph.
operations mathematical processes (Add, Subtract, Multiply, Divide)
Created by: Mr. Shaun
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