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36x25%x20+16x75怎么巧算

36x25-25x20+16x75 = 36x25-25x20+16x25X3 =36x25-25x20+25X48 =25X(36-20+48) =25X64 (=25X4X16)个人觉得这一步可要可不要·、 =1600

利用乘法分配律和特殊数的乘积进行简便计算。 (36+36×3)×25 =(36×1+36×3)×25 =36×(1+3)×25 =36×(4×25) =36×100 =3600

解: 36+1036÷()x25=961 1036÷()x25=925 1036/( ) x25=925 1036/( ) =37 ( )=1036/37 ( )=28 所以36+1036÷( 28 )x25=961

原式 =36x25-25x20+16x75 =(36-20)x25+16x75 =16x25+16x75 =16x(25+75) =16x100 =1600 或者 =36x25-25x20+16x3x25 =(36-20+48)x25 =64x25 =16x4x25 =16x100 =1600 供参考。

计算 36X25% =0.25x4x9 =1x9 =9

72000 ÷ (36 × 25) = 72000 ÷ (4 × 25 × 9) = 72000 ÷ 100 ÷ 9 = 720 ÷ 9 = 80

(36×3+16)×25 =(4×9×3+4×4)×25 =(9×3+4)×4×25 =(27+4)×100 =31×100 =3100

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