Activity $4$

$1)$ Convert the following numbers from Binary to Decimal:

a$)00010111$ b$)00111010$

$2)$ Convert the following numbers from Decimal to Binary:

a$)19$ b$)84$

$3)$ Convert the following negative numbers from Decimal to Binary $($two$$s complement$)$:

a$)-19$ b$)-84$

$4)$ Add or Subtract the following Binary numbers:

a$)00111010$ b$)00111010$

$+00010111--00010111$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$5)$ Add or Subtract the following Decimal numbers $($first convert to Binary, then convert back to

Decimal in the end$)$

a$)84+19$ b$)84-19$