4.7÷0.25+5.3÷0.25=4.7×4+5.3×4=4×（4.7+5.3）=4×10=40~回答差尺码完毕困陆~~结果仅供参考~~\(^o^)/~祝学习虚哪进步~~~
=4.7x4+5.3x4=4x(4.7+5.3)=4x10=40请采纳！你的采纳弯哪是我成长的动埋早码力睁尘！
