Missing Fraction Digits

Missing Fraction Digits

How can I find a missing digit?

 $\frac{3}{4\ \ }+\ \frac{x}{3}\ =1\ \frac{5}{12}$  

Let's solve this together!

 $\frac{3}{4\ \ }+\ ?\ =1\ \frac{5}{12}$  

First, pretend the entire piece is missing.  How can I solve this?

Multiple Choice

What's the opposite of addition?

• double addition

• subtraction

• multiplication

• division

 $1\ \frac{5}{12}-\ \frac{3}{4}=?$  

Rewrite with common denominators and solve.

 $1\ \frac{5}{12}-\ \frac{9}{12}\ =\ \frac{8}{12}$  

So, now we have to find an equivalent fraction for 8/12 with a 3 as the denominator.

 $\frac{8}{12}=\frac{?}{3}$  

Open Ended

 $4\ \frac{2}{4}-\ \frac{4}{?}=3\ \frac{7}{10}$  

How would you solve this? Explain with words.

 $4\ \frac{2}{4}-\ \frac{4}{?}=3\ \frac{7}{10}$  

Solve this problem pretending the middle fraction is missing all the way.

 $4\ \frac{2}{4}-\ \frac{4}{?}=3\ \frac{7}{10}$  

You Try!

Multiple Choice

 $1\ \frac{2}{3}+\frac{?}{8}=2\ \frac{13}{24}$  

• 5

• 7

• 3

• 11

Poll

How do you feel about this topic?

• 1- I'm in need of support.

• 2- I need a little more help.

• 3- I've got it pretty good.

• 4- I get it so good, I could teach it!