(-3.12)*35.2+6.28*(-23.2)-1.57*36.8
问题描述:
(-3.12)*35.2+6.28*(-23.2)-1.57*36.8
答
(-3.14)*35.2+6.28*(-23.2)-1.57*36.8
=-3.14*35.2-3.14*46.4-3.14*18.4
=-3.14*(35.2+46.4+18.4)
=-3.14*100
=-314
答
一楼不对,题目中没有-3.14
(-3.12)*35.2+6.28*(-23.2)-1.57*36.8
=-109.824-145.696-57.776
=-313.296