Solve Decimal Addition: 12.0 + 29.31 Step-by-Step

To avoid confusion in solving the exercise, we will first add the digit 0 to the number 12.0 as follows:

$12.00\\+29.31\\$

Now let's solve the exercise in order:

Let's add the hundreds after the decimal point:

$0+1=1$

Let's add the tenths after the decimal point:

$0+3=3$

Finally, let's add the whole numbers before the decimal point:

$2+9=11$

We'll add ten to the ones digit before the decimal point and get:

$1+1+2=4$

And we get:

$12.00\\+29.31\\41.31$