256*19-56*19的简便计算,99*35+35的简便运算,26*39+26的简便计算。56*109-56*9简便计算求解答

2025-04-24 12:07:06
推荐回答(1个)
回答1:

256x19-56x19
=(200+56)x19-56x19
=200x19+56x19-56x19
=3800+(56x19-56x19)
=3800+0
=3800
99x35+35
=(99+1)x35
=100x35
=3500
26x39+26
=26x(39+1)
=26x40
=1040
56x109-56x9
=56x(109-9)
=56x100
=5600
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