Question

A city has a population of 2,549,786 people. Estimate this population to the nearest million. Express your answer as the product of a single digit and a power of 10. Rounded to the nearest million, the population is about? Written as the product of a single digit and a power of ten, this number is blank X 10 to the power of what?

Answer 1

Solution,

The population of a city is 2,549,786.

We can convert it into nearest million as follows :

Million = 10 lakhs

Rounding off to the nearest million

2,549,786 = 3,000,000

There are 6 zeroes after 3. We can express as the product of a single digit and a power of 10 as follows :

$3,000,000=3\times 10^6$

Hence, the population of the city is 2,549,786 or $3\times 10^6$.