用递等式计算．（能简算的就简算）（1）2.54×9+1.27×（0.5÷O.25）（2）12÷（4.32﹣4．O2）×O.47．
直接写出得数 3×= ×= ×18= ×= = ÷= ÷= 3×= ．
直接写得数．========
12+9.9= 1÷0.25=÷=×50%=﹣=（0.75﹣）×96=
直接写得数．+= 6÷=÷4= 2×=÷5= 24÷=×=÷=×24=×=÷=×=
﹣=÷12= 15×= 36÷=+=×12=÷=×=
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×18= 
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×50%=
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=（0.75﹣
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= 6÷
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÷4= 2×
÷5= 24÷
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÷12= 15×
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