①12.5×3.7×0.8
②4.6×2.3+7.7×4.6
③3.6+（5.7+3.8）÷0.5
④3.6÷0.4﹣1.5×3
⑤0.1÷0.2÷0.4
⑥80.3﹣5.6×1.7．
①12.5×3.7×0.8
②4.6×2.3+7.7×4.6
③3.6+（5.7+3.8）÷0.5
④3.6÷0.4﹣1.5×3
⑤0.1÷0.2÷0.4
⑥80.3﹣5.6×1.7．
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