1. Adding and Subtracting Decimals
Section 5.2
Adding
and Subtracting Decimals

2. Adding Decimals
Steps
Line up the numbers using the decimal vertically.
If needed add zeros for place holders.
Starting from the far right number, add
If it is a double digit carry the tens number over.
Carry the decimal down

3. Example
Simplify

4. Example
Simplify

5. Subtracting Decimals Steps
Line up the numbers using the decimal vertically.
If needed add zeros for place holders.
Starting from the far right number, subtract
If the top # is smaller than the bottom #, borrow.
Carry the decimal down

6. Example
Simplify –

7. Example
Simplify 100 – 0.526

8. Example
Simplify – 17.84

9. Like Terms Blending and Evaluate

10. Example
Simplify y – 2.36 – 0.76y

11. Example
Simplify –

12. Example
Is 7 a solution to x = 9.3 ?

13. Example
Is a solution to y = 16?

14. Word Problem
Phillip bought a car part for $ If he paid with two $10 bills, what was his change?

15. Word Problem
In 2010, the average credit card late fee was $35. In 2011, the average credit card late fee had decreased by about $ Find the average credit card late fee in 2011.