问题标题:
计算:13.5×9.9+6.5×10.1=___.
问题描述:
计算:13.5×9.9+6.5×10.1=___.
陈仲新回答:
13.5×9.9+6.5×10.1
=13.5×(10-0.1)+6.5×(10+0.1)
=13.5×10-13.5×0.1+6.5×10+6.5×0.1
=135-1.35+65+0.65
=(135+65)-(1.35-0.65)
=200-0.7
=199.3.
故答案为:199.3.
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