（1）99×6.25+6.25
（2）（5.6×0.3﹣0.68）÷0.25×4
（3）6.9﹣（0.6+4.5）÷1.7
（4）7.2÷1.25÷0.8
（5）（25.5+17.25）÷0.25+0.75
（6）2.63×2.3+2.3+6.37×2.3．
（1）99×6.25+6.25
（2）（5.6×0.3﹣0.68）÷0.25×4
（3）6.9﹣（0.6+4.5）÷1.7
（4）7.2÷1.25÷0.8
（5）（25.5+17.25）÷0.25+0.75
（6）2.63×2.3+2.3+6.37×2.3．
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