Adding and Subtracting Mixed Numbers Assessment

Yes, he is correct because you just add the numerators and then add the denominators.

No, he is not correct. You have to find a common denominator before adding. The correct answer should be $$\frac{2}{3}$$ .

No, he is not correct because it is not in simplest form. The correct answer should be $$\frac{1}{4}$$ .

No, he is not correct. You should add the numerators and multiply the denominators. The correct answer should be $$\frac{2}{12}=\frac{1}{6}$$ .

6  1/3

6  2/3

6  2/6

7  2/3

17

16

14  1/2

16  1/2

6  1/3

6  2/3

6  2/6

7  2/3

5 ³/₈

-5 ³/₈

1 ⁵/₈

-1 ⁵/₈

denominators.

4   19/5

4 5/10

4 19/25

4 5/10

4 5/10

4 19/25

7  2/5

8  2/5

6  3/5

8  9/5

4 2/8

4  3/8

5 3/8

5  2/8

  2/3

  2/3

  2/3

  2/3