Dividing by unit and non-unit fractions

How many 3s are in 12?

How many 4s are in 12?

How many 6s are in 12?

 $What\ is\ 12\ groups\ of\ \frac{1}{4}?$  

 $What\ is\ 12\ groups\ of\ \frac{1}{3}?$  

 $What\ is\ 12\ groups\ of\ \frac{1}{6}?$  

Dividing by a whole number   $a$  produces the same result as multiplying by ___.

• a

• b

•  $\frac{1}{a}$  

•  $\frac{1}{b}$  

 $6\div\frac{1}{8}$  

 $6\div\frac{1}{25}$  

 $8\div\frac{1}{4}$