1. 25 + 3x5
2. 7x4-8
3.2x6+4 divided by 2
4. 18 divided by 6 x 9
5. 4 x 6 divided by 3
6. 5(2+7)
7.9(8)+1
8.56-(17+14)
9.3(8+2)-15
10.9+9/5-2
11.3+4(7)/2
12.6(4+2)/3(7-4)
2007-04-11 11:17:27 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Do you not have your own calculator??
If it's not that, just follow the Order of Operations rule:
PLEASE. EXCUSE. MY. DEAR. AUNT. SALLY.
P.E.M.D.A.S.
Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction.
2007-04-11 11:19:32 · answer #1 · answered by Rita 3 · 2⤊ 0⤋
25 + 3 x 5 =
25 + 15 =
40
- - - - - - - -
7 x 4 - 8 =
28 - 8 =
20
- - - - - - -
2 x 6 + 4 / 2=
12 + 4 / 2 =
12 + 2
14
- - - - - -
18 / 6 x 9 =
3 x 9 =
27
- - - - - -
4 x 6 / 3 =
12 / 3 =
4
- - - - - -
5 (2 + 7) =
5(9)= 45
- - - - - - -s-
2007-04-11 20:10:14 · answer #2 · answered by SAMUEL D 7 · 0⤊ 0⤋
Hmmm... guys, PEMDAS isn't correct.
Addition and subtraction are done from left to right.
So following pemdas, 10 - 4 + 5 = 10 - (4 + 5) = 1, but the correct answer is (10 - 4) + 5 = 11.
Similarly, multiplication and division are from left to right.
The right order is
1. parentheses
2. exponentiation from right to left (so 2^3^4 = 2^(3^4))
3. multiplication and division from left to right
4. addition and subtraction from left to right.
Note that the multiplication sign is not always shown. 9(8) is the same as 9x8.
2007-04-11 18:35:54 · answer #3 · answered by Raichu 6 · 0⤊ 1⤋
Can you tell me if the numbers following the variables are multiplier or exponents?
2007-04-11 18:26:09 · answer #4 · answered by kellenraid 6 · 0⤊ 0⤋
Remember the order of operations:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtract
Then I would suggest working on these yourself.
Good Luck.
2007-04-11 18:22:23 · answer #5 · answered by awiebun 2 · 1⤊ 1⤋