# Introduction to scientific notation

## Interactive practice questions

Complete the following expression.

$4000$4000$=$= $\editable{}$ × $10^3$103

Easy
Less than a minute
Given that $1$1÷$10$10 = $1\times\frac{1}{10}=1\times10^{-1}$1×110=1×101,
Express $7$7÷$10^2$102 in standard form form.
If we round to $1$1 significant figure, sound travels at a speed of approximately $0.3$0.3 kilometres per second, while light travels at a speed of approximately $300000$300000 kilometres per second.