Subtracting Mixed Numbers

If you have like denominators, like

2 3/4 - 1 1/4,

then use fraction strips.

eg.

1 2/4 in lowest terms is 1 1/2

Second Method

Subtract the whole numbers,

2 3/4-1 1/4 2-1=1

then subtract the fractions

3/4-1/4=2/4

1 2/4 in lowest terms is 1 1/2

a) 2 2/3-1 1/3=1 1/3 b)3 7/8-1 3/8=2 4/8= 2 1/2 c)4 3/4-1/4= 4 2/4= 4 1/2

Subtracting Mixed Numbers With UNLIKE Denominators
3 3/8- 1 1/2 3=24/8 1=8/8

27/8-12/8=15/8=1 7/8

Another Way to Regroup

3 3/8-1 1/4

2 11/8-1 4/8 (borrowed 8/8 or 1 from 3)

=1 7/8

a)4 1/4-3 2/5 b)4 1/4-7/8

4 5/20-3 8/20 4 2/8-7/8

3 25/20-3 8/20 3 10/8-7/8

=17/20 =3 3/8

This concludes my blog about subtracting mixed numbers but remember...

Pi day is on Tuesday March 16 at lunch time.

Clues will be all over the school and the first person to find all of them and get to the final destination will win a prize.

Good luck, and Good Bye!