Let's do some equations!
Exercise one:
if x=10 and y=20, what is the answer for: (x+y)/x?
Exercise two:
if a=69 and b=23, what is the answer for: (a-b)/b?
Exercise three:
if d=4 and e=11, what is the answer for: a+(d*a)?
Exercise four:
if g=34 and h=92, what is the answer for: (h+g)-g?
Have fun!