Question

WRITING NUMBERS IN SCIENTIFIC NOTATION

Write the number in scientific notation.

$0.0021$

Answer 1

Writing $0.0021$ as a product of two numbers

$0.002=2\times 0.001$ (Factor out 2)

$2\times 0.001=2\times {10}^{-3}$ (Write 0.001 as a power of 10)