Sunday, November 7, 2010

Order of Operation

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: No I do not agree. The correct answer is 4.7. This is how I go my answer:

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? 3x2.8+6.4÷4

There can be two possible answers they are:

(3 x 2.8)+ 6.4 ÷ 4 or 3 x 2.8 + (6.4 ÷ 4)
8.4 + 6.4 ÷ 4 3 x 2.8 + 1.6
8.4 + 1.6 8.4 + 1.6
= 10 = 10

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

Stevan had a garage sale. He sold his basketball for $2.50, he also sold a deck of cards for $1.25. Later that day he also sold 5 marbles at $1.60 each. He made a total of $11.75.

Heres an example of what we did in class.

2 x(4+8)÷2-1=
2x12÷2-1=
24÷2-1=
12-1= 11
Add caption
Here is a game you can play. Scroll down to math games and practice and click on #2.

16 comments:

paulo873 said...

good job Mikaela but you could put at lease a video or a link but anyways i really like how you explain it good job

Peter905 said...

Nice job mikaela but next time you make a scribepost post a video or a link for a game

Alex873 said...

Good job mikaela but you have to add more

Paolob said...

Great job keep at this.

Charisse817 said...

Good Job :), your picture really helped .

gielhc905 said...

nice job next time get a link of a video

romiel814 said...

Good Job Mikaela, I really like the picture that you made (if you made it) because it proves that you know how to do the order of operations.

Suzzene817 said...

Good job Mikaela. You did a good job explaining everything. And I like the game too! :)

kyanna 718 said...

Thanks Mikaela : )

Joy873 said...

Good Job Mikaela but next put a video and a link anyway nice job

j.b.816 said...

Good Job Mikaela ! next time put a video !

paige817 said...

Good Job Mikaela!! Next time the title should be just what you are talking about instead of putting your name too. You should also put a video to help people that need it. But other than that, good Job !

kim873 said...

good job mikaela ! i loved how you drew the picture (if you did) because it shows that you know them . maybe you should add a video next time , other then that , it was great ! (:

jayjay817 said...

awesome job keep it up

sarissa718 said...

Good job (:

Aaron S 814 said...

Good job! u should have put bedmas at the top GOOD Job anyways