Question

Complete the given equations.
$380+\underset{–}{i}=760$
$760-\underset{–}{ii}=380$

Answer 1

To find out the first missing number, we need to subtract 380 from 760, which will be equal to 380.So, $380+380=760$.
Now, if we form a subtraction equation from this addition equation, we will get $760-380=380$.Hence the missing number is 380.