Here is a study guide I made about place value.

1. Place Value
By Esme

2. What is Place Value?
Place value is the value or amount of a single
digit of a number. This includes Integers,
Percentages, Decimals, Fractions, Ones, Tens,
Thousands etc.

3. What is an Integer?
An integer is a whole number, not a Decimal,
Fraction or Percentage. Usually it just means a
negative or positive number.

4. What is a Positive Number
or a Negative Number?
Positive Numbers
A positive number is a number above zero on the
number line.
Negative Numbers
A negative number is a number below zero on
the number line. If there is a - sign in front it is a
negative number (-9).

5. What is Absolute Value?
The amount or value from the number 0,
ignoring the integer signs (- or +). So -9 and +9
have the same absolute value which is 9!

6. Adding and
Subtracting Integer
Explanations

7. Adding Integers 1
How to add positive and a
negative?
If you have a problem like 8 + -9
you subtract instead or add, so
change the symbol from adding to
subtracting. Also change the
negative into a positive. So 8 + -9
would be 8 - 9. Than just subtract
normally. If the If the number after
- is bigger than the first number
than the sum is a negative
number.

8. Adding Integers 2
How to add
Negative and a
Positive?
Adding a negative and a positive
looks like -9 + 8. If the second
number is bigger than the first
number the sum is a positive, if the
second number is smaller than the
sum is a negative. So -9 + 8 =
negative. To solve the problem you
go the amount of the second number
to the right on the number line (If
you have -9 + 8, you go 8 numbers
to the right). Than what number you
end up is the answer!!! So -9 + 8 = -1

9. Adding Integers 3
How to add 2
negatives?
Example: -8 + -9
Remember this, negative
plus negative equals
negative. First change the
negatives into positives.
Then just add normally,
after you have the sum put
a negative sign in front, so
-8 + -9 = -17

10. Subtracting Integers 1
How to subtract positive
with a negative?
If you have a problem like 8 -
-9 you actually add instead of
subtracting. So change the
subtract (-) symbol into a
adding sign(+). Then you
change the negative into a
positive. The problem should
end up looking like this (8 +
9). Then just add normally!

11. Subtracting Integers 2
How to subtract a
negative and a positive?
If you have a problem like -9 - 8,
this is how you do it. First you
need to know that the answer is
always a negative. First change
the negative into a positive, also
don’t subtract you should add.
Then add normally, when you
have the sum change it to a
negative. (Example if the cum is
17, change to -17) So -9 - 8 = -17

12. Subtracting Integers 3
How to subtract 2
negatives?
A problem like -2 - -2 equals either
a negative or a positive. First
change the second number into a
positive. Also don’t subtract, you
add. Then add, -2 + 2 = 0. Hint go
to the right when using the
number line.

13. Thank You!