Can you help me order these from least to greatest?

r= 0
r=- 0.8
r= 0.5
r= -0.3
r= 0.7

Sure! Here are the numbers listed from least to greatest:

r= -0.8
r= -0.3
r= 0
r= 0.5
r= 0.7

Thank you

You're welcome! If you have any more questions or need further assistance, feel free to ask. I'm here to help!