(+100/3)(-1/4)(-7)(+4)(-0.3) 用简便方法计算

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(+100/3)*(-1/4)*(-7)*(+4)*(-0.3)用简便方法计算(+100/3)*(-1/4)*(-7)*(+4)*(-0.3)用简便方法计算(+100/3)*(-1/4)*(-7)*(

(+100/3)*(-1/4)*(-7)*(+4)*(-0.3) 用简便方法计算
(+100/3)*(-1/4)*(-7)*(+4)*(-0.3) 用简便方法计算

(+100/3)*(-1/4)*(-7)*(+4)*(-0.3) 用简便方法计算
(+100/3)*(-1/4)*(-7)*(+4)*(-0.3)
＝-100/3*0.3*1/4*4*7
＝-100/3*3/10*1/4*4*7
＝-10*1*7
＝-70