竖式计算,前两题要验算①59×64 ②249÷8 ③45×36 ④306÷3 ⑤8...

2025-12-13 23:47:15
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回答1:

①59×64=3776;

②249÷8=31…1;

③45×36=1620;

④306÷3=102;

⑤8-7.5=0.5;

⑥7.7+2.3=10.