*It depends what place value needs to be rounded down, but without any specific place values, here are my answers*
<em>600.1</em>
<em>601</em>
<em>600.44</em>
<em>602.1</em>
<em>644.4</em>
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-Hope this helps :)
Answer: 700,000 + 20,000 + 80 = 720,080
Step-by-step explanation:
