Probability question

Probability question:


Sara was at a party and they played a game. She had to pick a marble out of the bag blindfoled. There was a blue marble, a pink marble, two green marbles,an orange marble, and two purple marbles.What's the P(getting a green marble on the first try then on the second one getting green and orange)?

Order of operations 2

Question 1:
Annie has been asked to calculate 1.7+6/2.She claims the answers is 3.85.Do you agree?Explain why or why not.
Answer:
Annie only got 3.85 because she didn't use BEDMAS.She did it this way to get her answer.
1.7+6=7.7
7.7/2=3.85
This is the real answer:
1.7+6/2=
6/2=3
1.7+3=4.7
Question 2:
Put the brackets in the following expression to get the largest value possible. What problem solving strategy did you use?
Answer:
I'd put the brackets between in the question like this---->(3x2.8)+6.4/4=
The answer would be 10 whick is the largest value you can get.I used BEDMAS to figure out the answer.
Question 3:
Create a problem that could be solved using the following expression:
2.5+1.25+5x1.6=
Answer:
Ella is selling paintings for her class fundraiser.one small painting is for $2.5 but if you buy two paintings you can get them for $1.25.Another deal Ella has is that if you buy three you can buy them for $1.6. Five people came and each person bought three paintings each.At the end of the day Ella made $8.

Here's a link that might help you:
http://www.mathsisfun.com/operation-order-pemdas.html



Here's a video that might help as well.