Decimal Addition: Solve 1.02 + 6.4 Step by Step

To avoid confusion in solving the exercise, we will first add the digit 0 to the number 6.4 as follows:

$1.02\\+6.40\\$

Now let's solve the exercise in order:

We'll add the hundredths after the decimal point:

$2+0=2$

We'll add the tenths after the decimal point:

$0+4=4$

Finally, we'll add the whole numbers before the decimal point:

$1+6=7$

And we get:

$1.02\\+6.40\\7.42$