Tag: introduction to numbers and number systems

$ 10 $ crores $ = 10,00,00,000 $

$ 1 $ billion $ = 1,000,000,000 $

So, $ 1 $ billion  $ = 100 \times 10,00,00,000 = 100 $ crore

Since,  $1,00,002$ is six digit number and $10,00,002$ is seven digit number.
$\therefore 1,00,002 < 10,00,002$
Option $B$ is correct.

In a subtraction minuend is a greater number and subtrahend is smaller number.
$\therefore$ greater number in the subtraction is called minuend.
Option A is correct.

Place value and face value are always equal for $ 0 $

In international numbering system
The 1st period consists of - ones, tens and hundred.
The 2nd period consists of - thousand, $10$ thousand and $100 $ thousands.
The 3rd period consists of - million, $10$ million and $100$ million.
$\therefore $  Numeral for sixty million and sixty six $=60,000,066$
Option B is correct.

As $8,08,08,079+1=8,08,08,080$

$\Rightarrow$  $Addend+Addend=Sum$

46)57804(1256
     46
     118
      92
      260
      230
        304
        276
           28

$\Rightarrow$  $3535\times 78$

Given number is $1,78,762$ 
First we see $10's$ place place value which is $62$ and it is more than $50$.
Now we will round up means to round off $762$ it will become $800$
So the correct answer is $1,78,800$.