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25×4=0.4×0.2=8-0.8=0.24÷0.6=数学公式=
数学公式=数学公式=数学公式=数学公式=560÷16÷5=

解:25×4=100; 0.4×0.2=0.08; 8-0.8=7.2; 0.24÷0.6=0.4; =
-=; 6÷=8; -=; 1.75-(0.75+)=0.6; 560÷16÷5=7;
分析:①直接写出结果;②先算4×2=8,然后在结果中从后向前数出两位,点上小数点即可;③注意数位对齐;④把被除数和除数分别扩大100倍,再相除;⑤分子相乘的积做分子,分母相乘的积做分母;⑥⑧通分计算;⑦除以一个数等于乘这个数的倒数;⑨运用减法的性质简算;⑩运用除法的性质简算.
点评:此题考查了小数、分数的四则运算,掌握运算方法是解题的关键.同时考查了运用运算定律进行简算的能力.
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