Kiara
Allen
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Step 1- Divide to change to a decimal. (Only
use 2 decimal places.)
Step 2- Put fractions on a number line.
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Divisible by 2- When the number ends in 0, 2, 4, 6,
and 8 (even numbers)
Divisible by 3- When the sum of the number is
divisible by 3.
Divisible by 4- When the last 2 digits are divisible
by 4.
Divisible by 5- When the number ends in a 0, or a 5
Divisible by 6- When the number is divisible by 2
and 3.
Divisible by 9- When the sum of the digits are
divisible by 9.
Divisible by 10- When it ends in a 10
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Addition RulesIf signs are the same: Keep signs and add.
If signs are different: Subtract, and keep the sign of
the one you have the most.
Subtraction Rules- Same Change Change
First number stays the same
Change sign to addition
Change the number after the addition sign to its
opposite
Use addition rules
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To find a percent of a number you multiply the
original number times the decimal for that
percent.
Example- If you need to find 40% of 68, you
multiple 68 x .4. Count decimal places when
multiplying.
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Scale Factor- The number you multiply in
order to make a shape smaller or larger.
Dilation- When an original shape is enlarged,
or made smaller by multiplying each side or
point by a scale factor.
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If you are looking for c use- A2 + B2 = C2