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37x25怎样巧算

(40-3)×25 =40×25-3×25 =1000-75 =925

﹙25×37+63×25﹚×8 =﹙37+63﹚×﹙25×4﹚×2 =100×100×2 =20000

950

=(40-3)×25 =1000-75 =925

4、1x25 =(4+0、1)x25 =4x25+0、1x25 =100+2、5 =102、5

59×(44×25) =59×11×(4×25) =59×11×100 =(60-1)x11x100 =(660-11)x100 =649x100 =64900

25x(17十13)一250 25x30一250 750一250 500

用十位上的数乘以它加1,再算5×5 例如:25×25=2×3=6 5×5=25 得数为:625

25x25÷4x4 =25X25X4÷4 =25X25 =625

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