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Algebraic expressions
- 2. Var iable – is a letter
or symbol that
r epresents an
unknown quantity.
X yZ n
t
- 3. A lgebraic ex pr essioncontaining at least one
variable and does not
contain an equal sign
EX: T + 3
- 7. 3. If possible, check
your expression by
plugging in values to
see if the answer
makes sense.
- 8. If given an expression
and the value of the
variable, simply plug
the value in and
solve.
m + 8
m = 2
2 + 8 = 10
- 9. Words That Lead to Subtraction
Decreased – Less – Difference
Minus – How many more
Words That Lead to Division
Divided by – Quotient
- 10. Words That Lead to Addition
Sum – More than –
Increased
Plus – Altogether
Words That Lead to Multiplication
Times – Product – Of
- 12. Pr actice Problems
4. A cake will
serve 12 people.
Write an expr ession for
how many people will C
cakes serve?