Adding and subtracting Fractions

Front

Is this a correct answer?

Back

No, you cannot add unlike denominators

Front

What is the next step to finding this answer? Options: Add the numerators (1+1=2), Multiply 12 X 1 for both fractions to find a new numerator, Multiply to find each new numerator by the multiple used to get 12. (3 X1) (4 X 1), This is a mistake, you don't need to convert to twelfths

Back

Multiply to find each new numerator by the multiple used to get 12. (3 X1) (4 X 1)

Front

1/2 + 1/3 =

Back

5/6

Front

7/10 + 2/4

Back

1 and 1/5

Front

6/10 + 2/3

Back

1 and 4/15

Front

8/9 - 5/6 =

Back

1/18

Front

Back

2/35

Front

9/10 - 3/4

Back

3/20

Front

Back

5 11/12

Answer explanation

Don't forget to regroup from the whole number 7. When I borrow 1 whole from the 7 it turns into 6. The pieces I borrowed from my whole I can add to my numerator to help me subtract.  

Front

Back

4 14/20, 4 7/10, 414/20, 47/10

Answer explanation

Don't forget to regroup from the whole number 9. When I borrow 1 whole from the 9 it turns into 8. The pieces I borrowed from my whole I can add to my numerator to help me subtract.