Rounding ^🔗

• Do not round a number if you are going to use it in another calculation
• You can round answers to 2 decimal places

What does $\epsilon 3$ mean on the calculator? ^🔗

• $1\epsilon 3$ is the calculator’s way of writing $1 \times 10^{3}$
• Similarly, $\epsilon -3$ means $\times 10^{-3}$
• This is called scientific form.
  • $1\epsilon +3 = 1 \times 10^{3} = 1,000$ you move the decimal place right
  • $1\epsilon -3 = 1 \times 10^{-3} = 0.001$ you move the decimal place left
• Never write $\epsilon$ in your equations. Always use $\times 10^{x}$