B=Brackets O=Order D=Division
You write it out like this because brackets comes before the order and
that comes before division and multiplication ,addition and subtraction. e.g.
4 (3 + 2)=?
you need to do the operation,or sum,inside the bracket first,3+2,then times the answer by 4.
If you ignored the brackets and did the sum 4 3 + 2= 14
You can see how the brackets make a difference to the answer.
Go to the next page and try some questions out..........