The PEMDAS rule (Parentheses, Exponents, Multiplication/Division, Addition/Subtraction) determines the correct order of operations in mathematical expressions, where multiplication and division share the same priority level and are performed left-to-right, as do addition and subtraction; following this rule ensures accurate results when solving complex expressions.
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Hi friends, welcome to Turbo Math's Channel.
In this video, we are going to solve three questions about PEMDAS rule.
In the first question, we have -2 * (7 - 21 / 7 * 4).
What is the answer of this question? Can you solve it? We have multiplication, parentheses, subtraction, and division.
To solve this question, we need to follow the order of operations, which is PEMDAS.
PEMDAS shows the priority of the mathematical operations. If you don't pay attention to this rule, you get the wrong answer.
If you want to get the right answer of this question, you must follow the PEMDAS rule.
In the PEMDAS rule, P stands for parentheses, E stands for exponent, M stands for multiplication, D stands for division, A stands for addition, and S stands for subtraction.
Multiplication and division have the same level of priority. Also, addition and subtraction have the same level of priority, and when we have both in an expression, we start from the left and simplify the question.
Okay, guys. According to the PEMDAS rule, first we simplify this parentheses. We have subtraction, division, and multiplication.
First, we simplify this division. -21 / 7 = -3. Now, we have 7 - 3 * 4 inside this parentheses.
The question is -2 * (7 - 3 * 4).
Okay, guys.
We have multiplication, parentheses, subtraction, and another multiplication.
According to the PEMDAS rule, in this step, we simplify this parentheses. We have subtraction and multiplication inside this parentheses. According to the PEMDAS rule, first we simplify this multiplication because the multiplication has higher priority than subtraction.
-3 * 4 = -12.
Now we have 7 - 12 inside these parentheses.
-2 * (7 - 12) 7 - 12 = -5.
Now the question is -2 * -5.
-2 * -5 = 10.
Okay, guys.
Let's solve another question about PEMDAS rule.
158 + 309 over 103 * 4 ^ 2 - 16 / 4.
What is the answer of this question? We have addition, division, multiplication, exponent, and subtraction.
Again, to solve this question, we need to follow the PEMDAS rule.
PEMDAS shows the priority of the mathematical operations, and if you want to get the right answer of this question, you must follow the PEMDAS rule. If you don't pay attention to the PEMDAS rule, you get the wrong answer.
In the PEMDAS rule, P stands for parentheses, E stands for exponent, M stands for multiplication, D stands for division, A stands for addition, and S stands for subtraction.
Multiplication and division have the same level of priority, also addition and subtraction have the same level of priority.
When we have both in an expression, we start from the left and simplify the question.
Okay, guys.
According to the PEMDAS rule, in this question, first we simplify this exponent.
4 ^ 2 = 16. Now we have 158 + 309 over 103 * 4 * 16 - 16 / 4.
Okay, guys.
In this step, we simplify this division.
309 over 103 equals 3.
Now, we have 158 + 3 * 16 - 16 / 4.
Okay, guys. We have addition, multiplication, subtraction, and division. In this step, we simplify this multiplication. 3 * 16 equals 48. Now, we have 158 + 48 - 16 / 4.
In this step, we have addition, subtraction, and division.
According to the PEMDAS rule, first we simplify this division.
-16 / 4 equals -4.
Now, we have 158 + 48 then -4.
158 + 48 equals 206.
Now, we have 206 -4.
206 - 4 equals 202.
The final answer of this question equals 202.
Guys, if you want to get the right answer of this question, you must follow the PEMDAS rule. If you don't pay attention to the PEMDAS rule, you get the wrong answer. Okay, guys. Let's solve another question about PEMDAS rule.
3 over 8 to the power of 2 * open parentheses 3 + 1 over 4 close parentheses.
What is the answer of this question? Can you solve it? We have exponent, multiplication, parentheses, and addition.
Again, to solve this question, we need to follow the order of operations, which is PEMDAS.
PEMDAS shows the priority of the mathematical operations.
In this rule, P stands for parentheses, E stands for exponent, M stands for multiplication, D stands for division, A stands for addition, and S stands for subtraction.
Multiplication and division have the same level of priority. Also, addition and subtraction have the same level of priority. When we have both in an expression, we start from the left and simplify the question.
Okay, guys. According to the PEMDAS rule, first we simplify this parentheses. We have 3 + 1 over 4.
Since the denominator of this fraction is 4, we can write 3 as 12 over 4.
Now we have 12 over 4 + 1 over 4 inside this parentheses.
Okay, guys. Now the question is 3 over 8 to the power of 2 times open parentheses 12 over 4 + 1 over 4 close parentheses.
Again, we simplify this parentheses.
12 over 4 + 1 over 4 equals 13 over 4.
Now the question is 3 over 8 to the power of 2 times 13 over 4.
In this step, we have exponent and multiplication.
According to the PEMDAS rule, first we simplify this exponent. 3 over 8 to the power of 2 equals 9 over 64.
Now we have 9 over 64 times 13 over 4.
Okay, guys.
9 times 13 equals 117.
And 64 times 4 equals 256.
The final answer of this question equals 256.
Guys, if you want to get the right answer of this question, you must follow the PEMDAS rule.
Parentheses, exponent, multiplication, division, addition, and subtraction.
Thanks for watching, guys. Please subscribe to the channel and leave a comment.
Goodbye.
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