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56x98的简便计算

=56x(100-98) =56x100-56x2 =5600-112 =5488

列式计算为56*(98+2)=56*100=5600 所以原式的结果为5600.

简便计算过程方法如下 解:56x98+56x3-56=56x(98+3-1)=56x100=5600

28*98+56 =28*(98+2) =28*100 =2800 你好,本题已解答,如果满意 请点右下角“采纳答案”.

57+66x98+75=132+66x98=2x66+66x98=(2+98)x66=100x66=6600

58X98=58x(100-2)=58x100-58x2=5800-116=5684

原式=55*(100-2)=5500-110=5390.

=28*(100-2)+56 =28*100-56+56 =2800

52*98=52*(100-2)=52*100-52*2=5200-104=5096

58X100-58X2=5684

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