Monday, November 8, 2010

Order of Operations

B - brackets
E - exponents
D - division
M - multiplication
A - addition
S - subtraction

here is how you work with BEDMAS.

1st - check if they're any brackets
2nd - check if they're are any exponents
3rd - check for division
4th - check for multiplication
5th - check for addition
6th - check for subtraction

here's an example













here are the solutions to Fridays homework:

1. Annie has been asked to calculate 1.7 + 6 ÷ 2. She claims the answer is 3.85. Do you agree? Explain why or why not.

No, because the answer is 4.7.

1.7 + 6 ÷ 2 =
1.7 + 3 =
4.7

2. Put brackets in the following expression to get the largest value
possible. What problem solving strategy did you use?

3 x 2.8 + 6.4 ÷ 4 =

brackets: 3 x (2.8 + 6.4 ÷ 4) =

3. Create a problem that could be solved using the following expression.

2.5 + 1.25 + 5 x 1.6 =

Lucy went to the canteen and bought a burger that cost $2.5, a cookie that cost $1.25 and 5 pieces of candy that cost $1.6. How much money would Lucy need to buy her lunch?

My answer:

$2.5 + $1.25 + 5 x $1.6 =
$2.5 + $1.25 + $8 =
$3.75 + $8 =
So Lucy would need $11.75 to pay for her lunch.

Here's a video to help you with the order of operations!
Also a link to help you out.


11 comments:

Michael711 said...

Hey Sompong. This scribe post was really good, but kind of dull. You could have added more color, and some sub titles to make it easier to read.

kassey814 said...

Amy you did such a good job and you explain everything that we did in class what could make it better is adding another picture like
http://www.google.ca/imgres?imgurl=http://3.bp.blogspot.com/_Rsk_44sXHdQ/SvDLmOJweRI/AAAAAAAAAAc/hkmjfg7kVSc/s320/brothers%2Band%2Bsisters.jpg&imgrefurl=http://room43math09.blogspot.com/2009/11/what-is-bedmas.html&usg=__s7lC2J4VwiV7eto7mvV_9J2gKao=&h=161&w=320&sz=12&hl=en&start=30&sig2=XksWUUl9vX_gmMdv-3xRaw&zoom=1&tbnid=K4GQkkaE_NQAQM:&tbnh=103&tbnw=205&ei=DpnYTPqkKIfEsAOikqS5Bw&prev=/images%3Fq%3Dbedmas%26um%3D1%26hl%3Den%26biw%3D1680%26bih%3D823%26tbs%3Disch:10%2C722&um=1&itbs=1&iact=hc&vpx=749&vpy=604&dur=4586&hovh=128&hovw=256&tx=103&ty=154&oei=BZnYTP2UBoWyngesufm-CA&esq=2&page=2&ndsp=29&ved=1t:429,r:25,s:30&biw=1680&bih=823

levi711 said...

Heey nice post it explained very well it helped alot good job ok bye see you at school

steven711 said...

good job i like how you added a link a picture and a video but the video was kinda dull next time try something like this: http://www.youtube.com/watch?v=QCzz09BvcCY&feature=fvst
good job though :)

randolph814 said...

Hey, I like your post and you added lot of details, added a picture, added a video and you added a homework for us and GOOD JOB!!!!!!!!! :-)

kristan817 said...

Nice scribe it helped me a lout and nice picture and video and good job for adding the homework NICE WORK :]

Joshuarego814 said...

This was a great scribe post i find nothing but 1 thing wrong ...... subtitles to give it LIFE!

Diana814 said...

Hi Amy!!! You have a awesome post. I like it how you made it really clear. But one thing is I think you should make your words more bigger and bold. Also I like it how your post had everything. Good Job!!

Anonymous said...

great job i really like it and it helps me alot thanks

jairusa873 said...

Nice video it showed what we learned
Nice job

Nathan711 said...

good job Sompong,
you explained well wrote lots and everything was good I don't have anything else to say