# Significant Figures

• Jul 3rd 2012, 09:37 AM
karies4083
Significant Figures
I had this problem come up while studying for my Math Praxis II exam.

What can the difference between the following numbers that are rounded to 2 significant digits:

2.87 million
2.22 million

Thanks,
karies4083
• Jul 3rd 2012, 09:51 AM
emakarov
Re: Significant Figures
Hint: The first number belong to the interval $[2.865\cdot10^6,2.875\cdot10^6)$ and the second number belongs to the interval $[2.215\cdot10^6,2.225\cdot10^6)$.
• Jul 3rd 2012, 10:49 AM
karies4083
Re: Significant Figures
Thanks .. that helps . .ALOT!

karies4083