5 out of 100 students got this right! 😳 Are you among the 5?

本站添加: 2026-05-19

[00:00:00]Hello, Grace mind. This particular question here is given in exam hall and a lot of students got it wrong without a calculator, okay? We have 6 + 2 / 2 in parentheses 2 + 2, okay? Now, what most people did in the class was to first of all add these together, okay? 6 + 2 = 8 / 2 in parentheses 2 + 2, okay? Now, the next thing they did was to divide this, okay? And they have 8 / 2 = 4 in parentheses 2 + 2, okay? Now, the next thing they did was to add the parentheses. So, they had 4 * 2 + 2 = 4.

[00:00:46]And 4 * 4 = 16, okay? Now, because this is very wrong because according to the order of operation, which is PEMDAS, we have to write it down, okay? We have to write P E M D A S, okay? Where P is the parentheses, E is the exponent M is multiplication D is division A is addition, S is subtraction, okay? Now, looking at our question, you can see that we have parentheses. We don't have exponent. We have We don't have multiplication. We have >> [singing] >> division. We have addition and we don't have subtraction, okay? Now, between multiplication and division, these two are of the same priority. That is to say that if you have both of them in a particular question, you have to solve from the left to the right, okay? And this addition and subtraction are of the same priority as well. You solve from the left to the right whenever you have both of them in a particular question, okay?

[00:01:55]So, from here, let's attend to the parentheses first, according to the order of operation. So, we have 6 + 2 / 2 in parentheses, 2 + 2 here is 4, okay?

[00:02:10]Now, looking at this, you can see that we have um we're going to have 6 + 2 / 2, and this two is going to multiply this first, so we'll have 2 * 4, okay?

[00:02:22]Now, from here, we'll have this to be equal to 6 + Now, we have division and multiplication here, and according to the order of operation division will come first, as in we're going to solve it from the left to the right, since they have the same priority, okay? So, we're going to have two ti- two divided by two equals one * 4, okay? So, from here, we multiply first, because multiplication is of higher priority to addition, so we'll have 6 + 1 * 4 equals um 4, okay? So, we'll have 6 + 4 to be equal to 10, and this is the right answer, okay? Now, let's solve another interesting question. So, from here, we'll have 6 + 4 / 4 + 4 * 4.

[00:03:11]Now, most people, what they did was to add these together 4 + 4 equals 8 then divide by 4 + 4 * 4, okay? Now, in their next step, they divided it by 4, and they had two + 4 * 4.

[00:03:32]So, from here, they added these 2 + 4 equals um 6, okay? * 4.

[00:03:40]Now, 6 * 4 equals 24, and this is wrong because according to the order of operation BODMAS, okay? I want us to use BODMAS this time around. That is B O D M A S. So, if if you use BODMAS or PEMDAS, you are still going to get the same answer. So, this is bracket, this is of, okay? This is of or order.

[00:04:11]Of or order, okay? And this is division, this is multiplication, this is addition, and this is subtraction. And these two have the same priority, you are to solve from the left to the right whenever you have both of them in a particular question. And looking at our question, we have division and multiplication. So, we have to solve from the left to the right. Now, these two have the same priority as well, you have to solve from the left to the right if we have both of them in a particular question, okay? So, from here, we are going to first of all, since we don't have um bracket, we don't have of, but we have these two, let's solve this, okay? So, we are going to have four plus 4 / 4 = 1 + 4 * 4, okay? Now, in our next step, we are going to multiply first because multiplication is of higher priority to addition. So, we have 4 + 1 + 4 * 4 here is 16, okay? So, we have addition all through, so we just add. 4 + 1 = 5 + 16. And 16 + 5 = 21 as the correct answer. Now, let's quickly solve this as well by using the PEMDAS rule, okay? We have to write it down so that we don't get confused.

[00:05:32]PEMDAS where this P is parenthesis, E is exponent M is multiplication, D is division A is addition, and S is subtraction, okay? Subtraction, Now, remember that we said that these two have the same priority and these two have the same priority, okay? So, from our question we have parentheses first.

[00:05:56]So, we have 18 divide by 6 in parentheses. 1 + 2 = 3.

[00:06:04]Okay? So, from here we have 18 divide by 6 * 2.

[00:06:10]Sorry, * 3. 6 * 3, okay? Now, from here 18 / 6 because we are to solve it from the left to the right since division and multiplication have the same priority. So, 18 / 6 will give us 3 and we have 3 * 3, okay? 3 * 3 = 9 and this is the answer. Thank you so much for watching to the end. Share your opinion in your comment section and also share this video. Bye.