Order of Operations (The Language of Math)

Order of Operation:
B-brackets ( )
E-exponents a²
D-division
M-multiplication (In order from left to right)
A-addition
S-subtraction (In order from left to right)

Example:



Solutions to solve:

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

A: I don't agree with her because she did not follow the order of operations of BEDMAS and the correct answer is suppose to be 4.7



2. Put the bracket in the following expression to get the largest value possible.
What problem solving strategy did you use?3 x 28+ 6.4 ÷ 4 =___


A: there is 3 possible answer (3 x 2.8) + 6.4 ÷ 4 = , 3 x 2.8 + (6.4 ÷ 4) = , and (3 x 2.8) + (6.4 ÷ 4) = and all of them is equals to 10




3. Create a problem that could be solved using the following expression. 2.5 + 1.25 + 5 x 1.6.

Expression: Kenny went to a Department store to but his missing supplies for school. He has $10 in his pocket. 5 package of pen which was $1.25 each, a calculator cost $1.60, and the pencil crayons cost $2.50 would he have enough money to buy his missing supplies?

A: No, he won't have enough money to buy his missing supplies because in total it was 11.75 and he only has 10 dollars.

Game:

Video:

Order of Operations

B-Bracets ( )
E-Exponents a2
D-Division------->in order from left to right
M-Multiplcation--^
A-Addition------->in order from left to right
S-Subtraction------^

Here is one of the examples we did in class


These are some questions on, Order of Operations.

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

A. I do not agree with Anne, because she didn't use BEDMAS. If she did use it her answer would be 4.7.

2. Put bracets in the following expression to get the largest possible value. What problem solving strategy did you use? 3 x 2.8 + 6.4 / 4

A. I would put the bracets here, (3 x 2.8) +6.4 / 4. The strategy I used was that I saw there was multiplcation and I know if you multiply you can get a higher answer. Then I multiplied 3 x 2.8 and I got, 8.4.

3. Create a problem that could be solved using the following expression. 2.5 + 1.25 + 5 x 1.6.

A. John wants to buy a tool for work that is $11.75. But John notices he only has $2.50 in his wallet. Then John goes home and finds $1.25 in his piggy-bank. But he is still $8.00 short! So he decides to have a quick garage sale with 5 things in it that costs $1.60 each. At the end of the day all 5 items were sold and he got his $8.00. Then he goes to the store and buys that tool.

Game: game link

Video: video link (wouldn't let me put it on)

Please Comment

Order Of Operations

B-brackets ( )

E-exponents a²

D-division (from the left)

M-multiplication (from the right)

A-addition (from the left)

S-subtraction (from the right)

example:

2x2+5=

4+5=

=9

This is a picture on how I did it.

This is a video to show BEDMAS

ORDER OF OPERATIONS:

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.

ANSWER:I don't agree because she didn't follow the order of BEDMAS,the answer should be 4.7

2. Put the bracket in the following expression to get the largest value possible.
What problem solving strategy did you use?3x2.8+6.48÷4

ANSWER:I would put the brackets here (3x2.8)+6.48÷4.Because multiplucation is a higher value then addition and divion.

3. Create a problem that can be solved using the following expression: 2.5+1.25+5 x 1.6

Lucy went to the mall to see if she can buy a present for her brother.At the mall a little toy car was $1.25,gift raping was $2.50,a bag was $5.00 and a card was 1.50.Lucy only had $10.00 in her poket.Does she have enough money to buy thoughs items.

ANSWER:she wouldn't have enough money because she only has $10.00 and all of the items cost $10.25.

Order of Operations

The order of operation is :

B- brackets ( )

E- exponents a²

D- division (Order from left

M- multiplication to right)

A- addition (Order from left

S- subtraction to right)

Here's an example:

2+4÷2x6=

2+2x6=

2+12=

14=

Here's an image showing how it works.

Here's a video showing how to use BEDMAS

Here's a link to play an Order of Operation game.

Solutions to solve:

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.

A. I don't agree because she didn't follow BEDMAS. Division and multiplication comes first then addition and subtraction If she did she would have got the answer 3.7.

2. Put brackets in the following expression to get the largest value possible. What problem solving strategy did you use? 3x2.8+6.4÷4

A. (3x2.8)+6.4÷4=10 I did the one in the brackets first but i rounded 3x2.8 to 3x3 which equals to 9. Then i did 6.4÷4 into 6÷4 which equals to 1. I added 9 +1 to get 10 as the answer.

3. Create a problem that can be solved using the following expression: 2.5+1.25+5 x 1.6

A. Jon was helping raise money for charity, he had $2.50 to start with the a man came in and dropped $1.25 in. 5 more people came in and gave $1.60 each. How much did Jon raise? He raised $11.75.

B.E.D.M.A.S.!

B-Brackets
E-Exponent
D-Division
M-Multiplication
A-Addition
S-Subtraction


Here is an example what we did in class!

Publish Post

Question:

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.

ANSWER:

She didn't do the B.E.D.M.A.S in order division comes first be fore adding . HERE IS A PICTURE

2. Put brackets in the following expression to get the largest value possible. What problem solving strategy did you use?3x2.8+6.4÷4

ANSWER

this are the possible answers( 3x2.8)+6.4÷4 or 3x2.8+(6.4÷4)

1st answer:( 3x2.8)+6.4÷4
2nd answer:3x2.8+(6.4÷4)

3. Create a problem that can be solved using the following expression: 2.5+1.25+5 x 1.6

ANSWER:

Andrew wanted to buy this new CD that was worth $11.75 including tax
but Andrew only have$2.5o dollars but his mom gave him $1.25 by doing chores he did chores for five of his neighbors and all of them gave him $1.60 each how much did he raise does he have enough money to buy the new CD.


answer is yes he has enough money to buy the new CD


Here's how i did it:
Here is a link to help you: ORDER OF OPERATION

PLEASE COMMENT

Textbook Answers for 4,6 and 12 .

Question 4 :

a) 36.72 divided by 30 = 1.224 ( 30 divided by 30 = 1 )

b) 5.92 divided by 0.4 = 1.48 (6 divided by 0.5 = 3)

Question 6:

Estimtion :

a) 22.5 divided by 6 = 4 (24 divided by 6 = 4. I used over estimate )

b) 4.56 divided by 0.8 = 0.50 (40 divided by 8 = 5 . I used front end estimation )

c) 3.5 divided by 0.5 = 6 (3 divided by 4 = 6 . I used under estimate )

d) 3.5 divided by 0.5 equals 6 (3 divided by 0.5 =6 . I used front end estimation )

Calculate :

a) 37.5 ( 225 divided by 3 = 75 divided by 2 = 37.5 )

b) 5.7 (456 divided by 2 = 228 divided by 2 = 114 divided by 2 = 57 . Or you could just keep doubling the number 57 until you get 456 . )

c) 8.5 (34 divided by 8.5 ) (8.5 x 2 = 12 , x 2 = 34 )

d) 7 (7 divided by 2 = 3.5)

Question 12 :

A carpinter was charged $398.65 to move gravel from the gardeb . She was charged $72.50 per hour. How long did she work for ? Estimate then calculate .

Estimate : 400 divided by 70 = 5.7

Calculate : 398.75 divided by 72.50 = 5.5 ( 5 hours and 30 minutes)

-5.5 x 72.5 = 398.75

-398.75 divided by 5.5 = 72.5

(either way , the answer will still be the same . )

THANKS FOR READING (:

here is a video to help you understand more about dividing decimals ! decimals

Estimation

Today in class Mr.isfled gave us question. The title was Dividing Desimals using Estimation

The question was Pens cost 40 cents You have $6.00 Estimate how many you can buy? So I know that you can fit two 40 cents in a dollar so I did that for every dollar but there is $1.20 still. $ 1.20 has three 40 cents. If you add all of those 40 cent it equal up to $ 6.00. So you can buy 15 Pens all together.