÷=÷3=××=×9×=÷2=5÷-÷5=7-=(1.6+3.2)×0.125=6×=
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解:①÷,
=×,
=;
②÷3,
=×,
=;
③××,
=××,
=1×,
=;
④×9×,
=,
=2;
⑤÷2,
=×,
=;
⑥5÷-÷5,
=5×-×,
=6-,
=;
⑦7-=;
⑧(1.6+3.2)×0.125,
=(0.2+0.4)×8×0.125,
=(0.2+0.4)×(8×0.125),
=0.6×1,
=0.6;
⑨6×=.
解析分析:①、②、⑤根据除以一个数等于乘以这个数的倒数计算,
③利用乘法的交换律计算,
④、⑥、⑦、⑨按分数的四则混合运算顺序计算,
⑧利用乘法的结合律计算.
点评:此题考查了分数的乘除法以及运算定律的运用.