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masya89 [10]
2 years ago
8

How do you know which part of the numerical expression to evaluate first?

Mathematics
2 answers:
Snezhnost [94]2 years ago
4 0
Ever heard of BIDMAS? Brackets Indices Divide Multiply Add Subtract

This shows the order to evaluate the equation.

First you add up the things inside brackets, because B is at the beginning of BIDMAS.

Let’s say you have
(5+3) - (4-2)

You first simplify the brackets.
(5+3) = ?. = 8. Now we have
8 - (4-2)
We still need to simplify the other bracket
(4-2) = ?. = 2.

Now we have 8 - 2.

The answer is 6.

You can do the same for that long equation, just remember the order of operation - BIDMAS.

Let’s pretend the / sign means divide.
Let’s say you have 8 x 4 / 3

The order of operations is BIDMAS - Divide comes before Multiply. Sooooo… we first divide the 4 by 3. (Okay, this was a bad example cause it gives a horrible decimal) it gives us 1.3.

Now we have

8 x 1.3.

Times those together and that’s you answer.

One more example.

8 / 4 x 3

Divide comes first, right? So we divide 8 by 4. And we get 2.

Now we have 2 x 3. Times those together and you have 6!

Now my explaining wasn’t that great, it’s my first time but I really tried hard to help so let me know if you need more explaining, and to what detail.

Always happy to help! :D
adell [148]2 years ago
4 0

Step-by-step explanation:

<h2><u><em>Ever heard of BIDMAS? Brackets Indices Divide Multiply Add Subtract</em></u></h2><h2><u><em>This shows the order to evaluate the equation.</em></u></h2><h2><u><em>First you add up the things inside brackets, because B is at the beginning of BIDMAS.</em></u></h2><h2><u><em>Let’s say you have</em></u></h2><h2><u><em>(5+3) - (4-2)</em></u></h2><h2><u><em>You first simplify the brackets.</em></u></h2><h2><u><em>(5+3) = ?. = 8. Now we have</em></u></h2><h2><u><em>8 - (4-2)</em></u></h2><h2><u><em>We still need to simplify the other bracket</em></u></h2><h2><u><em>(4-2) = ?. = 2.</em></u></h2><h2><u><em>Now we have 8 - 2.</em></u></h2><h2><u><em>The answer is 6.</em></u></h2><h2><u><em>You can do the same for that long equation, just remember the order of operation - BIDMAS.</em></u></h2><h2><u><em>Let’s pretend the / sign means divide.</em></u></h2><h2><u><em>Let’s say you have 8 x 4 / 3</em></u></h2><h2><u><em>The order of operations is BIDMAS - Divide comes before Multiply. Sooooo… we first divide the 4 by 3. (Okay, this was a bad example cause it gives a horrible decimal) it gives us 1.3.</em></u></h2><h2><u><em>Now we have</em></u></h2><h2><u><em>8 x 1.3.</em></u></h2><h2><u><em>Times those together and that’s you answer.</em></u></h2><h2><u><em>One more example.</em></u></h2><h2><u><em>8 / 4 x 3</em></u></h2><h2><u><em>Divide comes first, So we divide 8 by 4. And we get 2.</em></u></h2><h2><u><em>Now we have 2 x 3. Times those together and you have 6!</em></u></h2><h2><u><em>Now my explaining wasn’t that great, it’s my first time but I really tried hard to help so let me know if you need more explaining, and to what detail.</em></u></h2><h2><u><em></em></u></h2>

<u><em></em></u>

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