4.3x6.7+0.67x67-6.7用简便方法计算

=4.3*6.7+6.7*6.7-1*6.7
=(4.3+6.7-1)*6.7
=10*6.7
=67

4.3x6.7+0.67x67-6.7
=4.3*6.7+6.7*6.7-1*6.7
=6.7*10=67

4.3x6.7+0.67x67-6.7
=4.3X6.7+6.7X6.7-6.7X1
=(4.3+6.7-1)X6.7
=10X6.7
=67

=4.3*6.7+6.7*6.7-6.7 (第二项中把0.67乘以10,再把6.7除以10,结果与原来相同)
=6.7*(4.3+6.7-1) (提取公因式)
=6.7*10
=67

4.3x6.7+0.67x67-6.7
=4.3X6.7+6.7X6.7-6.7X1
=(4,3+6.7-1)*6.7
=10*6.7
=67