用简便方法计算3.75*12*3.67
问题描述:
用简便方法计算3.75*12*3.67
答
=(4-0.25)*12*(4-0.33)=(48-3)*(4-0.33)=45*4-45*0.33=180-(40*0.33+5*0.33)=180-(13.2+1.65)=180-14.85=165.15
用简便方法计算3.75*12*3.67
=(4-0.25)*12*(4-0.33)=(48-3)*(4-0.33)=45*4-45*0.33=180-(40*0.33+5*0.33)=180-(13.2+1.65)=180-14.85=165.15