They need to rotate 1,600 times because 8 x 200 = <<8*200=1600>>1,600

They need to rotate 1,000 more times because 1,600 - 600 = <<1600-600=1000>>1,000

# Answer

1000
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Greg is riding his bike around town and notices that each block he rides, his wheels rotate 200 times. He's now on a a trail and wants to make sure he rides at least 8 blocks. His wheels have already rotated 600 times, how many more times do they need to rotate to reach his goal?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
1000
Greg is riding his bike around town and notices that each block he rides, his wheels rotate 200 times. He's now on a a trail and wants to make sure he rides at least 8 blocks. His wheels have already rotated 600 times, how many more times do they need to rotate to reach his goal?
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