Adding/Subtracting Decimals

1
Adding/Subtracting Decimals

• Mrs. Matej

2
Adding and Subtracting Decimals

• When adding or subtracting decimals, you always
  line up your decimals.
• If you have a whole number with no decimal, the
  decimal comes at the end. For example 9 is the
  same as 9.0
• You can also add zeros to fill in missing decimal
  places

3
Step 1 Line up your decimals
5.3

12.86
Step 2 Annex zeros so all the numbers have the
same final place value.
Adding
4
1
05.30
Solve

12.86
6
1
8
1
.
5
10.079
6.234
-
Step 1 Line up your decimals
Step 2 Annex zeros so all the numbers have the
same final place value.
Subtracting
6
10
9
0
10.079
-
06.234
Solve
.
5
4
8
3