The core of the sun is the power source of the sun
Example 2
5 X (3 + 7)
So first you add the 3 and 7 which is 10 and
then multiply by 5 giving the answer of 50.
If there are no brackets then you have to look
for multiply or divide functions. If these are
present in the equation then they must be
calculated first before any plus or subtract
functions.
Example 3
5 + 6 X 3
Here the 6 is multiplied by the 3 giving the
answer of 18. Then you add the 5 making the
complete answer 23.
But what if the sum contains only multiply and divide
functions or only plus and subtract functions.
Well in this case you work left to right through the sum.
Example 4
4 - 3 + 6
Here you subtract the 4 from the 3 to make 1,
then add the 6 giving an answer of 7
Example 5
10 X 5 ÷ 4
Here you would multiply the 10 and 5 to give
you 50 and then divide by 4 giving you the
answer of 12.5
You may notice that the sum in example 5 is
the same in either order (5 ÷ 4 is 1.25 and
multiply that by 10 gives you 12.5) but this is
not always the case.
.
In life you may come across a maths problem
which looks something like this.
Example 1
12 + 4 X 5
This sum can be calculated in two ways.
Either you add the 12 to the 4 giving the
answer of 16 and then multiply that by 5 giving
the answer of 80.
Or you may multiply 4 X 5 which is 20 and then
add the 12 giving the answer of 32.
So which of these is correct? You may think
the logical move would be to calculate as it is
written i.e. left to right but this is not how it is
done.
In Maths certain rules determine the order
that sums are calculated in.
The first thing to look for in an equation is
brackets. If part of the equation is in brackets
then this needs to be calculated first.
