Sunday, November 7, 2010

Order Of Operation

When you are working with order of operation you need to know:
B- Brackets ()
E- Exponents 3²
D- Division ÷
M- Multiplication x
A- Addition +
S- Subtraction -

Now here are the rules:
1. First check if to see if there are any brackets in the math question.
2. Then check if there are any exponents in the math question.
3. Now check to see if there is multiplication or division in the math question from left to right.
4. Finally check to see if there is any addition or subtraction in the math question from left to right.
E.G.
1. 2 + 3 x 4 =
2 + 12 =
14 =

If you are still confused here's a video to help you understand about Order of operation








1.
Annie was asked to calculate 1.7 + 6 ÷ 2. She claims the answer is 3.85. Do you agree?
Explain why? or why not?
1. 7 + 6 ÷ 2 =
1.7 + 3 =
4.7 =
2.Put brackets in the following expression to get the largest value possible. What problem strategy did you use?
3 X (2.8) + (6.4÷4)=10

3. Create a problem that could be solved using the following expression.
(2.5)+1.25+5X(1.6)=11.75

E.G
  1. Annie has been asked to calculate 1.7+6 divided by 2.She claims the answer is 3.85.Do you agree? i don't agree because if you use BEDMAS you would divided the answer first 6 divided by 2= 3 + 1.7 =4.7
  2. Put brackets in the following expression to get the largest value as possible.What problem solving did you use? 3x(2.8)+(6.4)divided by 4=10.9
  3. Create a problem that could be solved using the following expression. (2.5+1.25)+(5x1.6)=14


Anna and Jake calculated 2.5 + 1.25 + 5 x 1.6. Anna got 14, and Jake got 11.75. How do you think they got their answer? Who has the right answer?

Answer(my answer):

I think that Anna did the question like this:

2.5 + 1.25 + 5 x 1.6 = 14


I think that Jake did this:

(2.5 + 1.25) + (5 x 1.6) =

3.75 + 8 =

11

Jake added brackets so that he can make it easier.


What's your Answer?

If you want to practice your order of operations click this LINK.


10 comments:

madeline816 said...

Hi, Sarah. Awesome blog! Thanks for the video and link it really helped.

beverly814 said...

Hey Sarah,you did great. You had everything that we needed to know about order of operations.:)

Kamille817 said...

Hey Sarah, good job for making a scribe post. You had everything we needed there. The video really helps me understand more about Order of operations. Thanks again. ~:D~

ronalen 8-14 said...

hey sarah. your scribe was great and it had every thing you need. great job;)

Danilyn8-73 said...

Hi Sarah, I like your video it explains Order of Operations easier for me.

Michael711 said...

Hey Sarah, this blog is awesome! It explains a lot and the video was really helpful.

hannah816 said...

Hi Sarah. Good scribe post! Your explanation for order of operation makes it easier to understand! The video helped, so did the link, thanks! Good Job.

serena 814 said...

Hi Sarah, Great scribe post! The video you added gave me a better understanding on order of operations. I really like your word problem. I also really like when you said "what is your answer?" Well, here is my answer to your question.
2.5 + 1.25 + 5 x 1.6 =
2.5 + 1.25 + 8 =
3.75 + 8 =
= 11.75

Here is a link you should add to your scribe post. http://www.mathgoodies.com/lessons/vol7/order_operations.html
Great Scribe Post.

levi711 said...

Nice post Sarah you explained very well bye see you at school :)

Lance873 said...

nice post sarah i like how you put colours on it and i like how you put the letters big