计算:3.51×49+35.1×5.1+49×51=______.
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计算:3.51×49+35.1×5.1+49×51=______.
![计算:3.51×49+35.1×5.1+49×51=______.](/uploads/image/z/2074743-63-3.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A3.51%C3%9749%2B35.1%C3%975.1%2B49%C3%9751%3D______%EF%BC%8E)
3.51×49+35.1×5.1+49×51
=3.51×49+3.51×51+49×51
=3.51×(49+51)+49×51
=351+(50-1)×(50+1)
=351+2500-1
=2850.
故答案为:2850.
=3.51×49+3.51×51+49×51
=3.51×(49+51)+49×51
=351+(50-1)×(50+1)
=351+2500-1
=2850.
故答案为:2850.
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