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72x27+72x72怎么做

(27+72)x72

可以这么算72x27+72x72=72×(27+72)=72×99=72×(100-1)7200-72=7128

24*27 24*72 24 =24*27 24*72 24*1 =24*(27 72 1) =24*100 =2400

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29x72+72x27-72 = 72 × ( 29 +27 -1 ) = 72 × ( 30+27 - 2) = 72 × ( 57 - 2 ) = 72 ×55 = 8×9 ×5×11 = (8 ×5 )× (9 × 11) = 40 × 99 = 40 × (100 -1 ) = 4000 - 40 = 3960

27×27+27×72+27 =729+1944+27 =2700

原式 =135x27+135x72+135x1 =135x(27+72+1) =135x(99+1) =135x100 =13500

27×72+27×27+27 =27×(72+27+1) =27×100 =2700 你好,本题已解答,如果满意,请点右上角“采纳答案”。

巧算36+27+36x72+36怎么做 36+27+36x72+36 =36×(27+72+1) =36×100 =3600

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