Showing posts with label How to do the "BEDMAS". Show all posts
Showing posts with label How to do the "BEDMAS". Show all posts

Friday, November 5, 2010

How to do the "BEDMAS"

B - brackets ( )
E - exponents
D - division
⇵ in order from left to right
M - multiplication
A - addition
⇵ in order from left to right
S - subtraction

Eg. (64-34x2)+(22-3²)=
(64-64)+(22-3²)=
0+(22-3²)=
0+(22-9)=
0+13=
13=

3 questions
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 she is wrong, the write answer is 4.7. And this is how i got the answer.












2.) Put brackets in the following expression to get the largest value as possible. What problem solving strategy did you use? (3x2.8)+6.4÷4 or 3x2.8+(6.4÷4)
The strategy that i used is multiplication or division. This is how I did it.
Multiplication:













Division:












3.) Create a problem that could be solved using the following expression.
2.5+1.25+5x1.6
Problem: Cody saw a cupcakes and they cost $1.60 each, then he saw big cookies that cost $2.50, then he saw a cool pen that cost $1.25. He wants to buy 1 cookie, 1 pen, and 5 cupcakes, but he only has $10.00. Does he have enough money to buy the cupcakes, cookie, and the pen?
Answer: No he doesn't have enough money to buy the cupcakes, cookie, and the pen because the 5 cupcakes, 1 cookie, and 1 pen all together cost $11.75. Here's how i got my answer.














Here is the link to help you practice bedmas.

Here is a video to show how to do a "bedmas" if you don't understand the ones that i explained.



Hope you understand my explanation and i hope that you enjoyed it. Thanks for reading and watching.