Share Week 16 - Algebra expression (Grade 7 - Maths)
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a math expression in which one or more values are represented by avariable.
Algebraic expression
A number that does not change.
A constant
A quantity that may change within the context of a mathematical problem or experiment.
Variable
A number used to multiply a variable.
Coefficient
Says that two things are equal. It will have an equal sign. The values on each side of the equal sign are balanced.
Equation
A group of numbers, symbols and operators (+, -, x) grouped together that show the value of something.
Expression
Terms whose variables (letters or symbols), and their indices are the same.
Like terms
Either a single number or variable, or numbers and variables multiplied together.
Term
To make an equation smaller by combining like terms
Simplify
Find the Nth term rule for each sequence. (3, 7, 11, 15, 19)
4n - 1
Find the Nth term rule for each sequence. (8, 6, 4, 2, 0)
-2n +10
Which of the following are algebraic expressions? (5x × 2, 7y + 3x, 17×78)
5x × 2, 7y + 3x
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Expand them
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