Unit 7 Math
Word/Vocabulary
Example/Picture
Explain
Exponential
Notation
2*2*2 = 2³
A way of
representing
repeated
multiplication
by the same
factor.
Account
Balance
Expression
An amount of
money that
you have or
that you owe.
2 +3
𝜋𝑟 2
𝑎2 + 𝑏 2
(2+3) + 5 *2
A
mathematical
phrase made
up of
numbers,
variables,
operation
symbols
and/or
grouping
symbols.
It does not
contain
relation
symbols
(=, <, >)
Unit 7 Math
In the Black
Having a
positive
account
balance;
having more
money than is
owed
In the Red
Having a
negative
account
balance; owing
more money
than is
available
Numbers less
than 0
Parentheses
within
parentheses in
an expression
A notation
consisting of
the significant
digits of a
number and
words for the
place value.
A number that
is the same
distance from
0 on a number
line as n.
Negative
Number
Nested
parentheses
Number and
word
notation
Opposite of a
number
-1, -2, -3, -3.5, -4
27 billion is number and word notation for
27,000,000,000
-n and n
-4 and 4
-87 and 87
Unit 7 Math
Order of
operations
Parentheses
Also brackets,
braces, etc.
P – Parentheses
E – Exponents
M – Multiplication
D – Division
A – Addition
S – Subtraction
Please Excuse My Dear Aunt Sally.
Rules that tell
the order in
which
operations in
an expression
should be
carried out
(2+3) * 6 - Parentheses
[2+3]*6 – Brackets
{2+3}*6 - Braces
Define the
order of
operations
Scientific
notation
4,300 = 4.3 * 10³
0.001 = 1 * 10ˉ³
Standard
notation
356
125.89
-7
A way of
writing a
number as the
product of a
power of 10
and a number
that is at least
1 and less than
10.
Our most
common way
of writing
whole
numbers,
integers and
decimals