Solve: 10(0.75 + 1.2) - Order of Operations with Decimals

Question

10(0.75+1.2)= 10(0.75+1.2)=

Video Solution

Solution Steps

00:00 Solve
00:03 Always solve parentheses first
00:09 Use long addition
00:17 Pay attention to the decimal point
00:21 Now multiply
00:26 And this is the solution to the question

Step-by-Step Solution

First, let's solve what's in the parentheses vertically.

Let's remember that:

1.2=1.20 1.2=1.20

We'll make sure to write the exercise correctly.

Note that the decimal point is in place and ones are under ones, tens under tens, etc.

1.20+0.75 1.20\\+0.75\\

And we'll get the result:

1.95 1.95

Now we have the exercise:

10×1.95= 10\times1.95=

This exercise doesn't require calculation, but rather moving the decimal point "one step" to the right, since we are multiplying by ten.

In other words, if we move the decimal point to the right we'll get:

19.5 19.5

Answer

19.5 19.5