ok my little brother has this worksheet with order of operations. he has to add the grouping symbols in the correct place. the 2 operations are four times 2 minus 2 to the second power divided by 9 and plus 2 and it has to equal 6.
the 2nd is
six times seven minus three times four plus one and has to equal 27. PLEASE HELP
2007-09-06 10:25:37 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
i know the order of operations but its 4 divided by 9. how do you divide 4 by nine??!?! and then add 2 and get 6.
2007-09-06 10:34:02 · update #1
ok.ok. i got the second.
here's the 1st
4*2-2[squared]/9+2
/=divide
2007-09-06 10:37:00 · update #2
easy 6*7-3*(4+1) = 27
I need a little more luck with the 1st one
cracked it :-)
((4*2-2)^2)/9+2 = 6
or (4*2-2)*(4*2-2)/9+2 = 6
2007-09-06 10:34:41 · answer #1 · answered by Anonymous · 0⤊ 0⤋
In order for problem one to work correctly it should read...
(4x2-2)^2/9+2 Explanation: Work out the parenthesis then take the answer to the second power, next divide by 9 then add 2 = 6
(4x2=8-2=6, 6 to the second power is 36 divided by 9 = 4 plus 2 is 6.
Answer 2: 6x7-3(4+1)=27
Explanation: 6 times 7 = 42 - 3(4+1=5), 42-3x5, 42-15=27
This does you no good unless you look over the order of operations and actually learn how to do this.
2007-09-06 17:45:55 · answer #2 · answered by Rob K 1 · 0⤊ 0⤋
four times 2 minus 2 to the second power divided by 9 and plus 2
4(2) - 2^2/9 + 2 - sorry, this one elides me
six times seven minus three times four plus one
6(7) - 3(4 + 1) = 42 - 15 = 27
2007-09-06 17:38:02 · answer #3 · answered by kindricko 7 · 0⤊ 0⤋
(4*2 -2)^2 /9 +2 = 6
6*7-3*(4+1)=27
2007-09-06 17:40:36 · answer #4 · answered by ironduke8159 7 · 0⤊ 0⤋
It would be easier to help you if you typed out the actual numbers instead of the words, but I'll try to help. The way we learned order of observations is with PEMDAS. Start with the parentheses, then exponents (that's when you do 2 to the second power), then multiplication and division (these two actually don't matter, you can do division and then multiplication as long as you do them before addition and subtraction), then addition and subtraction (these are like multiplication and division, they can be switched).
Hope that helps!
2007-09-06 17:33:15 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The order of operations are:
PEMDAS
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subraction
2007-09-06 17:31:03 · answer #6 · answered by b_ney26 3 · 0⤊ 0⤋