99乘43加43递等式简便计算

2024-11-19 14:35:47
推荐回答(3个)
回答1:

99X43+43
=99X43+43X1(后面的43也乘以1,得数不变,再根据乘法分配律简便计算)
=(99+1)X43 或43X(99+1)(根据(A+B)XC=AXB+BXC)
=100X43
=4300

回答2:

99X43+43
=99X43+43X1
=43X(99+1)(乘法分配律)
=100X43
=4300

回答3:

99*43+43=43*(99+1)=43*100=4300