First divide the number of pandas by 2 to find the number of couples: 16 pandas / 2 = <<16/2=8>>8 panda couples

Then multiply that number by 25% to find the number of babies: 8 panda couples * 25% = <<8*25*.01=2>>2 panda babies

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A zoo has 16 pandas, paired into mates (in the same zoo). Only 25% of the panda couples get pregnant after mating. If they each have one baby, how many panda babies are born?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2
A zoo has 16 pandas, paired into mates (in the same zoo). Only 25% of the panda couples get pregnant after mating. If they each have one baby, how many panda babies are born?
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