12.5×0.8=5.1÷0.3=2.4×6=17÷0.17=
3.2÷0.8÷0.4=0.25×4÷0.25×4=1.25×16=7.01-2.58=
0.05÷0.1=6.88÷4=

解:12.5×0.8=105.1÷0.3=172.4×6=14.417÷0.17=100
3.2÷0.8÷0.4=100.25×4÷0.25×4=161.25×16=207.01-2.58=4.43
0.05÷0.1=0.56.88÷4=1.72

分析:按照小數(shù)四則混合運算的運算順序和計算法則進行計算.
點評:此題考查學生的計算能力,計算時要細心,同時注意簡算.
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4.58-3.5=72.8÷8=3.5×0.3=0.25×100=
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