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99x78+33x66怎么巧算

99*78+33*66 =99*78+99*22 =99*(78+22) =99*100 =9900

44x34+44x66 =44X(34+66) =44X100 =4400

217x34+217x66 =217x(34+66) =217x100 =21700

135x34-34+34x66 =34*(135-1+66) =34*(134+66) =34*200 =6800

58x66+58+33x58 =58×(66+1+33) =58×100 =5800 你好,本题已解答,如果满意,请点右上或下角“采纳答案”,支持一下。

=99(66-32) =99×34 =(100-1)×34 =3400-34 =3366

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