How do you evaluate #72\div 9\times 2^{2}#?

2 Answers
Jim G.
Mar 13, 2018

#32#

Explanation:

#"Following the order of operations set out in PEMDAS"#

#"Exponents "to" multiplication "to" division"#

#"However, when multiplication/division appear in the"#
#"calculation evaluate from left to right"#

#rArr72-:9xx4larrcolor(red)"exponents"#

#=8xx4larrcolor(red)"division"#

#=32larrcolor(red)"multiplication"#

Tash
Mar 13, 2018

32

Explanation:

You start with simplifying the index. Therefore you are left with:
#72 -: 9 xx 4#

Then you do the division and multiplication in the order that it is written, from left to right. Start with #72 -: 9 = 8#
#8 xx 4 = 32#

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