Good Examples Student Work for Open Response
Example 1
No, Cameron can make 9 bags. Bob
did not do the operations correctly.
You have to make 4.5 into an
improper fraction. That's 9/2. Then,
you divide 9/2 by 1/2, and you get
your answer, which is nine!
Example 2
Bob did not solve the problem right. He did his math all wrong.
These are the following steps to answer the problem correctly.
Step 1 : Change your fraction into an improper fraction.
Step 2 : Multiply the improper fraction by one half.
Step 3 : Then your resulting product will be 9/2 .
Step 4 : Next you divide your improper fraction 9/2 by ½.
Step 5 : When you multiply 9/2 x 2/1 , the answer will be 18/2.
Step 6 : Your final answer will be 9 bags of candy.
Excellent Examples
Example 3
No, Bob's equation to solve the answer was wrong. Bob
was suppose to turn the 4 1/2 into an improper fraction.
After Bob did that he was suppose to apply the acronym
KCF which stands for Keep, Change, and then Flip. Bob
was suppose to turn 4 1/2 into 9/2 and since he is dividing
turn the division sign into a multiplication sign then flip 1/2
into 2/1. Bob didn't do the problem right because he took
the problem and split it in half instead of taking the other
1/2 in the problem. Bob also added a one that was not part
of the problem so that threw the problem off even more.
The answer would have been nine not three, so Bob got
the wrong answer.
Example 4
Bob did the problem wrong. He did not make the
mixed fraction into an improper fraction. 4 1/2 as an
improper fraction equals 9/2. Now he needs to divide
the improper fraction by the other fraction (1/2).
When he divides the fraction it will change to 2/1.
Now you have to multiply the two fractions together
so that will be 9/2 x 2/1. The result is 18/2. Two goes
into 18 9 times so the answer is 9 not 3.
Bob’s answer should have been 9 bags of candy.