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Brynlee
07-06-2013, 10:32 AM
SAT mathematics - Order of operations

Can anyone help me with the following simplification:

3-10\div 5\times 4-1+(4-5\times 2)^2

Thanks!;)

miranda
07-06-2013, 10:48 AM
The order of operations is:

1st - Parentheses (Grouping symbols are always done from the innermost set outward.)

2nd - Exponents

3rd - Multiplication & Division (These operations are done in the order they appear from left to right. They are done together because they have the same importance)

4th - Addition & Subtraction (These operations are done in the order that they appear from left to right)

So for your question we have

3-10\div 5\times 4-1+(4-5\times 2)^2

=3-10\div 5\times 4-1+(4-10)^2

=3-10\div 5\times 4-1+(-6)^2

=3-10\div 5\times 4-1+36

=3-2\times 4-1+36

=3-8-1+36

=30

Brynlee
07-06-2013, 10:51 AM
Thank you miranda!!:D