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5.2 Algebra

Expression A group of terms separated by a " +" or "
Variable or pronumeral. A letter used to represent a number we don't know. E.g. a, c.
Term Can be a single number, a number and a variable or variables multiplied together.
E.g. a, 4e, 6, d², are terms.
Constant A number on its own. E.g. 5a + 3b
Coefficient The number in front of a variable. E.g. coefficient of 4e is 4.
Equation A mathematical sentence that contains an equals sign. E.g. 5b × 4 = 12
Name the variables in this expression 4a + 3c a and c
List the terms in the expression r + 4s r and 4s
List the terms in the expression 7w - 2x + 9 The terms are 7w, -2x and 9
The coefficient of 3b 3
The constant in the expression 8h + f -5 -5
The expressions in this equation 14e * 2 = 3f + 10 14e * 2 and 3f + 10
x +6 an expression or equation? expression
Is 8q + 4 = 2n equation
2ab = 2 x a x b
de = d x e
b x b =
5( r + s) = 5 x (r + s)
Multiplication words Times, product of.
Addition words Sum, add, increase by, deposit, plus.
Subtraction words Minus, subtract, less than, decrease by, withdraw, take away, difference between.
Division words Share, divide, quotient.
Sum of g and 20 g + 20
Product of 16 and r 16 x r = 16r
Take away 25 from the sum of c and a. c + a
Quotient of t and 3 t ÷ 3 = t/3
Created by: leoniewanchap