如题所述
ç®ä¾¿è¿ç®: 260å120÷3x15
260å120÷3x15
=260+40*15
=260+600
=860
260å120÷3x15
=260+40*15
=260+600
=860
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第1个回答 2016-11-17
简便运算:
260十120÷3x15
=260十40x15
=260十600
=860
260十120÷3x15
=260十40x15
=260十600
=860
