5 Laws of arithmetic?

Question

I need to know the 5 laws of arithmetic, anyone have a clue?

Answer 1

Sorry, I don't know what the "5 Laws" are, but here is some information that might help...

Addition and multiplication are commutative.  That means you can still get the same answer no matter what order the numbers are in.

(example: 1+3+92 = 92+1+3)

(example: 1x3x92 = 92x1x3)

Subtraction and division are noncommutative.  In other words, you cannot switch the order of the numbers involved.

(example: 1-3-92 does not equal 92-1-3)

(example: 1/3/92 does not equal 92/1/3)

Some other rules I can think of are as follows:

The order of operation:

1. Do the work in parentheses first.

2. Multiplication and division second.

3. Addition and subtraction last.

Example:

What is the answer to this: (1+3)x(4+10/2)-3x12+2+3x(12-1) = ?

If you do the math correctly you will get 35.

If you completely ignore the rules and just process each number from left to right you would get 1499.