What is the most likely shape of Frankie's mother's lasagna?

$$\frac{35}{50}\ •\ \frac{?}{?}\ =\ \frac{7}{10}$$    Which Giant One makes the most sense?

$$\frac{28}{60}\ =\ \frac{2\ •\ 14}{2\ •\ 30}\ =\ \frac{14}{30}$$  

Is 14/30 simplified to the lowest terms?

What is the GCF? for 24/30?

• (Remember the largest factor both numbers share.)

What is the GCF? for 18/45?

(Remember the largest factor both numbers share.)

Use your knowledge of Giant Ones to simplify the expression.

Use your knowledge of Giant Ones to simplify the expression.

Which of these show Multiplicative Identity, check all that apply.