题干
用简便方法计算下列各题
3.6×0.25
99×1.83+1.83
12.5×0.78×0.8
3.67÷0.25÷40．
答案(点此获取答案解析）
解：①3.6×0.25
=0.9×4×0.25
=0.9×（4×0.25）
=0.9×1
=0.9
②99×1.83+1.83
=1.83×（99+1）
=1.83×100
=183
③12.5×0.78×0.8
=12.5×0.8×0.78
=10×0.78
=7.8
④3.67÷0.25÷40
=3.67÷（0.25×40）
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