Question

There are 12987 cats in a large animal rescue shelter. Another 3456 cats are added to the shelter. The total number of cats in the rescue shelter is

• A. 16443
• B. 16453
• C. 14563
• D. 15643

Answer 1

The correct option is A 16443

Total number of cats in the rescue shelter is $12987+3456$

To add large number ot add the like terms, i.e., unit's place digit with unit's place digit, tens place digit with tens place digit and so on.


So, adding Ones place digit first, we get
As we know that,

$13$ Ones $=10$ Ones $+3$ Ones

$10$ Ones $+3$ Ones $=1$ Tens $+3$ Ones

So, we will keep $3$ at the Ones place and give $1$ as a carry to Tens place.

Therefore,
Similiarly, on adding further digits with carry, we get: