Anonymous
10/16/2014 22:01
Subject: Order of operations -- help me
Anonymous
10/16/2014 22:00
Subject: Order of operations -- help me
Anonymous wrote:Thanks for all of the help.
Are you smarter than a 5th grader -- for some of you -- yes! For me, no!
OP, don't feel bad, you sound like my mom, she is very smart, has a degree in philosophy, reads book I cannot even understand the title of, but does not understand math at all, she can barely add and subtract. it does not mean she is not smart. I never let her help me with math though, even in elementary school it was clear to me that I was better off doing it by myself
Anonymous
10/16/2014 21:44
Subject: Order of operations -- help me
Anonymous wrote:OP here, Does it matter in (1) that the 4 is not right next to the parenthesis? It's not 6^2 - 4(7-4). It was clearly written with a multiplication sign b/t the 4 and the parenthetical. I would have done it like 21:37 wrote if it had been 4(7-4). It's a bit confusing.
No, both mean to multiply - whether there is a multiplication sign or if the number is directly outside the parenthesis. Generally, kids do not start learning 4(3-1) until 5th or 6th grade or so. Up until then, they use the multiplication sign.
Anonymous
10/16/2014 21:43
Subject: Order of operations -- help me
Thanks for all of the help.
Are you smarter than a 5th grader -- for some of you -- yes! For me, no!
Are you smarter than a 5th grader -- for some of you -- yes! For me, no!
Anonymous
10/16/2014 21:43
Subject: Order of operations -- help me
Anonymous wrote:OP here, Does it matter in (1) that the 4 is not right next to the parenthesis? It's not 6^2 - 4(7-4). It was clearly written with a multiplication sign b/t the 4 and the parenthetical. I would have done it like 21:37 wrote if it had been 4(7-4). It's a bit confusing.
No that does not matter. Putting the number next to the parenthesis is just shorthand for multiply. The multiplication symbol (asterisk, x, etc.) is optional.
Anonymous
10/16/2014 21:43
Subject: Order of operations -- help me
Anonymous wrote:OP here, Does it matter in (1) that the 4 is not right next to the parenthesis? It's not 6^2 - 4(7-4). It was clearly written with a multiplication sign b/t the 4 and the parenthetical. I would have done it like 21:37 wrote if it had been 4(7-4). It's a bit confusing.
It doesn't matter. It's exactly the same. 4(7-2) is exactly the same as 4x(7-2).
Anonymous
10/16/2014 21:42
Subject: Order of operations -- help me
Anonymous wrote:5th grade math:
"simplify the expression below" (I'm using a "^" to show an exponent b/c I don't know how to do the superscript font)
1. 6^2 - 4* (7-4)
I thought it would be 36-4 * (7-4) ----> 32 x 3
2. 5^2 - 4* (5-3)
I thought ti would be 25 - 4 x (2) ----- 21 x 2 = 42
But DC got it wrong. The other options for answers were (a) 2, (b) 8, or (c) 17.
Help.
???
The mistake you made was subtracting before multiplying - in both problems.
First problem - start with the parenthesis. Now, you have 6(squared) - 4 *3.
Now, do the exponent. Now, you have 36 - 4 * 3.
NOW, you multiply first because multiplication comes before subtraction. 36 - 12
The PEMDAS helps, but if you have BOTH addition and subtraction in a problem or BOTH multiplication and division in a problem, then you do the arithmetic from left to right.
Anonymous
10/16/2014 21:41
Subject: Order of operations -- help me
Solve the parentheses first. Then do the multiplication. Then do the subtraction.
So it would be 6^2-4(3)=36-12=24
Next one is 5^2-4(2)=5^2-8=25-8=17
So it would be 6^2-4(3)=36-12=24
Next one is 5^2-4(2)=5^2-8=25-8=17
Anonymous
10/16/2014 21:40
Subject: Order of operations -- help me
OP here, Does it matter in (1) that the 4 is not right next to the parenthesis? It's not 6^2 - 4(7-4). It was clearly written with a multiplication sign b/t the 4 and the parenthetical. I would have done it like 21:37 wrote if it had been 4(7-4). It's a bit confusing.
Anonymous
10/16/2014 21:39
Subject: Order of operations -- help me
My dear aunt sally == (multiply, divide) then (add, subtract)
#1 is:
(6^2) - (4 * (7 - 4))
36 - (4 * (7 - 4))
36 - (4 * 3)
36 - 12
24
#1 is:
(6^2) - (4 * (7 - 4))
36 - (4 * (7 - 4))
36 - (4 * 3)
36 - 12
24
Anonymous
10/16/2014 21:39
Subject: Order of operations -- help me
2 is c
Anonymous
10/16/2014 21:38
Subject: Order of operations -- help me
Anonymous wrote:
2. 5^2 - 4* (5-3)
I thought ti would be 25 - 4 x (2) ----- 21 x 2 = 42
But DC got it wrong. The other options for answers were (a) 2, (b) 8, or (c) 17.
25 - 4(2) = 25 - 8 = 17
You multiply before you do the subtraction.
Anonymous
10/16/2014 21:37
Subject: Order of operations -- help me
Anonymous wrote:
1. 6^2 - 4* (7-4)
I thought it would be 36-4 * (7-4) ----> 32 x 3
It's 36 - 4(3) = 36 - 12 = 14
Anonymous
10/16/2014 21:35
Subject: Order of operations -- help me
Anonymous
10/16/2014 21:32
Subject: Order of operations -- help me
5th grade math:
"simplify the expression below" (I'm using a "^" to show an exponent b/c I don't know how to do the superscript font)
1. 6^2 - 4* (7-4)
I thought it would be 36-4 * (7-4) ----> 32 x 3
2. 5^2 - 4* (5-3)
I thought ti would be 25 - 4 x (2) ----- 21 x 2 = 42
But DC got it wrong. The other options for answers were (a) 2, (b) 8, or (c) 17.
Help.
???
"simplify the expression below" (I'm using a "^" to show an exponent b/c I don't know how to do the superscript font)
1. 6^2 - 4* (7-4)
I thought it would be 36-4 * (7-4) ----> 32 x 3
2. 5^2 - 4* (5-3)
I thought ti would be 25 - 4 x (2) ----- 21 x 2 = 42
But DC got it wrong. The other options for answers were (a) 2, (b) 8, or (c) 17.
Help.
???