Question

Of the 12.4 million species of organisms in the world today, 64% (almost two thirds) are insects.

Estimate to the nearest million the number of insect species.

Answer 1

Approximately, there are 8 million insect species.

Explanation:

Convert 64% into decimal

64%/100% = 0.64

To get the number of insect species, we just have to multiply the total species of organism by 0.64

Let n be the number of insect species

n = 12,400,000(0.64)

n = 7,936,000

n ≈ 8 million