Question

Peter has $24$ pencils with him. If he gave $6$ pencils to his sister, then how many pencils are left with him $?$

• A. $8$
• B. $12$
• C. $18$
• D. $28$

Answer 1

The correct option is C $18$

No. of pencils Peter have $=24$

No. of pencils he gave it to her sister $=6$

Number of pencils remaining with him $=24-6$.

To subtract these numbers, we first align them according to Place Value table.


Now, as subtracting numbers of Ones place, we get

$4-6$, which is not possible.

As we know that,

$24=2$ Tens $+4$ Ones

But, $1$ Tens $=10$ Ones

$2$ Tens $+4$ Ones $=1$ Tens $+14$ Ones

Therefore, for subtracting Digits at Ones place, we will borrow $1$ Tens from $2$ Tens.

So, digit at Ones place will become $14$.



Therefore, number of pencils remaining with him $=18$.