Question

74X28-28x39十72x35的简便方法？

Answer 1

先提取前两组的公因数28，再提取得到的结果中和第三组的公因数35，即原式＝28*（74－39）＋72*35=35*（28＋72）＝3500。

Answer 2

74X28-28x39十72x35的简便算法：
74X28-28x39十72x35
=28×(74-39)+72×35
=28×35+72×35
=35×(28+72)
=35×100
=3500

Answer 3

74X28-28x39十72x35的简便方法？
=74x28-39x28+72x35
=(74-39)x28+72x35
=35x28+72x35
=35x (28+72)
=35x100
=3500

Answer 4

=74*28-39*28+72*35
=(74-39)*28+72*35
=35*28+72*35
=35* (28+72)
=35*100
=3500

Answer 5

74×28-28×39+72×35
＝(74-39)×28+72×35
＝35×28+72×35
＝35×(28+72)
＝35×100
＝3500