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0.4÷40%=0.64+3.6=0.25×4=
0.56×数学公式=数学公式×数学公式=5.6÷0.1%=
数学公式÷2=数学公式×数学公式=数学公式÷3+3÷数学公式=
6.73×99+6.73=

解:

0.4÷40%=1,0.64+3.6=4.24,0.25×4=1,
0.56×=0.07,×=5.6÷0.1%=560,
÷2=×=÷3+3÷=8
6.73×99+6.73=673.

分析:÷3+3÷同时运算除法,再算加法;
6.73×99+6.73=673运用乘法分配律简算;
其它题目根据运算法则直接求解.
点评:本题考查了简单的运算,要注意根据运算法则和运算定律快速准确的得出答案.
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