| Lesson M54-1 - Adding Decimals - 1
1. Add 53.47 and 39.65.
To add decimals follow these steps:
STEP 1: Line up the decimal points and place values. Put the decimal point in
the answer.
T O . t h
5 3 . 4 7
+ 3 9 . 6 5
.
STEP 2: Add as you would with whole numbers. Regroup as needed.
1 1 1
5 3 . 4 7
+ 3 9 . 6 5
9 3 . 1 2
So, 53.47 + 39.65 = 93.12.
2. Add 7.431 + 45.2.
STEP 1: Line up the decimal points and place values. Put the decimal point in
the answer.
T O . t h th
7 . 4 3 1
+ 4 5 . 2
.
STEP 2: Add as you would with whole numbers. You can write in zeros as place
holders, as long as the zeros do not change the value of the
number.
1
0 7 . 4 3 1
+ 4 5 . 2 0 0
5 2 . 6 3 1
So, 7.431 + 45.2 = 52.631.
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