76乘29加71乘24用簡便方法算

=76×29+71×24
=76×29+（100-29）×24
=76×29+100×24-29×24
=（76-24）×29+2400
=52×29+2400
=（50+2）×29+2400
=50×29+2×29+2400
=1450+58+2400
=3908一定對我用電腦算過了