Question

Find the value of $(-3)+5$ using the chip model.

• A. $-2$
• B. $8$
• C. $2$
• D. None of the above

Answer 1

The correct option is C $2$

$\text{Need to find}:(-3)+5$ using chip model

Suppose, we have two different colored chips as depicted below.


Consider, one green colored chip denotes $+1$ and one red colored chip denotes $-1$.

Also, addition of one green chip and one red chip would be equal to $0$ as one green chip $(+1)$ and one red chip $(-1)$ cancel out each other.


Now, to find the value of $(-3)+5,$ we have to add $-3$ and $5$. This can be carried out by adding $3$ red chips with $5$ green chips as shown below.


$3$ red chips combine with $3$ green chips, and by cancelling each other, it results into $0.$ Remaining $2$ green chips are equivalent to $+2.$

Therefore, $(-3)+5=+2=2.$

$\therefore$ (c.) is the correct option.