Question

Estimate the product $979\times 393$ into by rounding off each to its greatest place.

• A. $400000$
• B. $40000$
• C. $270000$
• D. $27000$

Answer 1

The correct option is A $400000$

$\Rightarrow$ The given numbers are $979$ and $393$

$\Rightarrow$ Its tens digits are $7$ and $9$, which is greater than 5.

$\Rightarrow$ So, we increase the digits at hundreds place by 1 and replace each one of the digits at tens and ones place by 0 to round off the given number to nearest $100$.

$\therefore$ Round off $979$ and $393$ are $1000,400$

$\Rightarrow$ $1000\times 400=400000$