Step by step
The question
Question: work out (5.6 + 2.8) ÷ 1.2.
1 Brackets first
Everyone uses the same order, so we all get the same answer.
Brackets come first.
We write 5.6 on top and 2.8 under it, with the points in line.
6 + 8 = 14.
We write 4 and carry the 1 to the next column.
The point goes straight down.
1 + 5 + 2 = 8.
5.6 plus 2.8 is 8.4.
2 Times and divide
Dividing by a decimal is hard.
So we move the point 1 place to the right in both numbers.
That is times 10 for both, so the answer stays the same.
In 8.4, the point jumps 1 place to the right.
It becomes 84.
In 1.2, the point jumps 1 place to the right.
It becomes 12.
8.4 becomes 84.
1.2 becomes 12.
84 divided by 12 is 7.
So the answer is 7.
Let's look back.
First: brackets.
Last: times and divide.