Equality
A math statement showing that
two things are equal.
Example: 3
+ 2
= 5 |
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Equation
A math statement showing that
two things are equal. (Same thing as an equality.)
Example: 3
+ 2
= 5 |
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Equidistant
Equidistant just means "the
same distance." |
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Estimate
When you estimate the answer
to a problem it means that you give a pretty good guess at
what the answer will be.
Example:
199 x
302 =
?
Well, that's close to 200
x 300
which is 60,000. (I can do that
in my head). So, my estimate for the answer
is 60,000. The real
answer is 60,098.
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Even Number
An even number is a number
that is cleanly divisible by 2. (When I say "cleanly
divisible" I mean that there is no
remainder.)
Example: 2,
4,
6,
8, ... |
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Expanded Notation
Expanded notation is when you
write a number out to show all the place values.
Example: 5682
= ( 5
x 1000
) + ( 6
x 100
) + ( 8
x 10
) + ( 2
x 1
)
For more info, check out my
decimals lesson on expanded notation. |
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Exponent
An exponent is when a
little number is to the right
and a bit above a number. It's also called a
"power." Here are a couple examples of what it means:
For more info on how exponents work in
Algebra, check out my
lesson on exponent rules. (There are several
individual lessons, this is just the review lesson.) |
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Exponential
From Algebra, an exponential
is a
function in the form:
where (in my picture)
b > 1
The graph of this
exponential on the right. The bigger x gets, the faster
the graph
climbs! Notice that the
variable, x, is
up in the exponent...
The base of the
exponential is b.
The bigger the base,
the faster the graph
climbs!
For more info, check out my lesson,
The Exponential Monster. |
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Exterior Angles
When a
pair of
parallel lines are intersected with a
transversal, angles A,
B,
G and
H are the
exterior angles that
are formed. Exterior angles are on the
outside! |
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