76×29+71×24的简便方法_数学解答

76×29+71×24的简便方法

人气：234 ℃　时间：2020-01-04 00:51:33

解答

=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