简便计算:43*67+33*33-7=?急,

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简便计算:43*67+33*33-7=?急,简便计算:43*67+33*33-7=?急,简便计算:43*67+33*33-7=?急,43*67+33*33-7=(33+10)*67+33*33-7=3

简便计算:43*67+33*33-7=?急,
简便计算:43*67+33*33-7=?急,

简便计算:43*67+33*33-7=?急,
43*67+33*33-7
=(33+10)*67+33*33-7
=33*67+10*67+33*33-7
=33*(67+33)+670-7
=33*100+670-7
=3300+663
=3963

43*67+33*33-7=43*(100-33)+33*33-7= 43*100-(43-33)*33-7=4300-330-7=3963

43*67+(43-10)*33 -7=43*100-330-7=3963

43*67+33*33-7
= 43*(100-33)+33*33-7
=4300-43*33+33*33-7
=4300-(43-33)*33-7
=4300-330-7
=3963

=33乘67+33乘33+10乘67-7=33乘(67+33)+670-7=3300+670-7=3970-7=963

43*67+33*33-7
=(33+10)*67+33*33-7
=33*67+670+33*33-7
=33(67+33)+663
=3330+633
=3963