I need to know 5×5-2+1×2

Question

5×5-2+1×2

Answer 1

5x5-2+1x2

= 25-2+2

= 25 -4

=21

pemdas order of operations

but most would say 25

as (5x5)-2+(1x2)

= 25-2+2

=25+(-2+2)=25+0 =25

or

=(25-2)+2 = 23+2 = 25

although

pemdas seems to say

(5x5)-2+(1x2)

= 25-2+2

= 25-(2+2)

=25-4 = 21

if you treat the -, negative sign as subtraction which comes only after addition in pemdas

still, odds are you want 25 as the answer

as the left to right working of the problem gets very popular and most want to make -2 into negative 2, not make the - into subtraction where you subtract all of what comes next

so go with 25

pemdas means

p for parentheses

e for exponents

m for multiplication

d for division

a for add

s for subtract

in that order

Please Excuse My Dear Aunt Sally is the acronym to remember it

in this given problem 5x5-2+1x2

only the m, a and s apply

do m first, a 2nd, s last

=25-2+2 is the multiply 1st operation

= 25-0 is add 2nd

=25 is subtract last

or

= 25-2+2 after m 1st

= 25-(2+2)

= 25-4 is add 2nd

= 21 is subtract last

trick is where to put implicit parentheses