Calculate the Sum: 8.5 + 5.2 + 8.4 Addition Problem

Question

Solve the following exercise:

$8.5+5.2+8.4=\text{ ?}$

00:00 Solve

00:03 Let's break down each number into its whole number and decimal point

00:30 We'll use the commutative property to arrange the exercise in a convenient way to solve

00:56 Let's solve one operation at a time separately

01:12 Let's continue solving

01:21 And this is the solution to the question

First we will break down each of the factors in the exercise into a whole number and its remainder:

$8+0.5+5+0.2+8+0.4=$

Now we'll combine only the whole numbers:

$8+5+8=13+8=21$

Then we'll calculate the remainder:

$0.5+0.2+0.4=0.7+0.4=1.1$

Finally, we are left with the following:

$21+1.1=22.1$

22.1