Math - Grade 5 Fractions

What is  $\frac{3}{4}$  of 40? 

What is  $\frac{8}{15}$  of 60 ?

What is   $\frac{1}{2}$  of 42

 $What\ is\frac{2}{3}\ of\ 60?$  

 $What\ is\ \frac{19}{49}$  of 147?

 $What\ is\ \frac{2}{5\ }\ of\ 35$ 

 $What\ \ is\ \frac{2}{3}\ of\ 81$  

 $What\ is\ \ \frac{12}{17\ }of\ 357$  

 $What\ is\ \frac{25}{51}\ of\ 561$  

 $What\ is\ \frac{1}{7}\ of49?$