Subtract Mixed Numbers with Like Denominators

I can subtract mixed numbers with like denominators.

Why?

So that I can subtract mixed numbers in real life when I am measuring, building, sewing, crafting, cooking, etc.

I will know I am successful when?

I can use what I know with converting mixed numbers to fractional form (and visa versa) to help me subtract more easily.

This will help me avoid having to borrow or re-group!

Multiple Choice

Let's remember how to convert from mixed numbers to fractional form. What is 4 3/8 in fractional form?

• 15/8

• 35/8

• 8/35

• 36/8

Multiple Choice

What is 2 6/8 in fractional form?

• 60/8

• 16/8

• 22/8

• 60/2

22/ 8

Convert 2 6/8 to fractional form.

35/8

Convert 4 3/8 to fractional form.

4 3/8 - 2 6/8 =

​Now subtract 35/8 - 22/8.

Finally, convert the answer back into a mixed number.

Multiple Choice

35/8 - 22/8 =

• 57/8

• 6/8

• 10/8

• 13/8

Multiple Choice

What is 13/8 as a mixed number?

• 1 5/8

• 2 5/8

• 1 4/8

• 21/8

Use converting to help you!

1) Convert mixed numbers to fractional form.

2) Subtract numerators.

3) Convert your answer (in fractional form) to a mixed number.

Multiple Choice

7 1/4 - 5 3/4=

• 6/4

• 5/4

• 7/4

• 8/5

Multiple Choice

What is 6/4 as a mixed number?

• 10/4

• 1 2/4

• 2 1/4

• 1 3/4

Multiple Choice

3 2/5 - 1 4/5

• 7/5

• 3/5

• 1 3/5

• 2 3/5