
43+43×99
= 43x(99+1)
= 43x100
= 4300
=1*43+43*99
=(1+99)*43
=4300
乘法分配率
43+43×99=43*(1+99)=4300
43+43×99=43×1+43×99=43×(1+99)=4300

43+43×99
= 43x(99+1)
= 43x100
= 4300
=1*43+43*99
=(1+99)*43
=4300
乘法分配率
43+43×99=43*(1+99)=4300
43+43×99=43×1+43×99=43×(1+99)=4300