‘壹’ 36乘以34简便方法计算
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‘贰’ 36乘34用简便方法怎样算
36*34
=(35+1)*(35-1)
=35^2-1
=1225-1
=1224
‘叁’ 36乘34 25乘23简便计算
36*34=36*(30+4)
=36*30+36*4
=1080+144
=1224
25*23=25*(20+3)
=25*20+25*3
=500+75
=575