用简便方法计算:41又3分之1*4分之3+51又4分之1*5分之4+64又5分之1*6分之5

2025-02-03 00:09:22
推荐回答(1个)
回答1:

(41+1/3)*3/4+(51+1/4)*(4/5)+(64+1/5)*(5/6)
=(40+4/3)*3/4+(50+5/4)*(4/5)+(60+21/5)*(5/6)
=40*3/4+1+50*4/5+1+60*5/6+21/6
=31+41+50+3+1/2=125又1/2

(41+1/3)*3/4+(51+1/4)*(4/5)+(64+1/5)*(5/6)
=124/3*3/4+205/4*4/5+321/5*5/6
=31+41+107/2
=31+41+53+1/2
=125又1/2