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125x82用简便计算.

125×82 =125×(80+2) =125×80+125×2 =10000+250 =10250

(125x17)x82 =(125x17)x80 + (125x17)x2 =10000x17 + 250x17 =170000 +4250 =174250

125x82-125x2 =125*(82-2) =125*80 =10000

=125x2x17x4x21 =125x8x17x21 =1000x17x21 =17000x21 =17000x20+17000 =340000+17000 =357000

用简便方法计算(125十25)x82 (125十25)x82 =82*(100+50) =82*100+82*50 =8200+4100 =12300

143x82+143x19—143 =143×(82+19-1) =143×100 =14300

528x82+472x82 =82x(528+472) =82x1000 =8200 朋友,请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!!! 朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问。谢谢。

43×15+82×15 =(43+82)×15 =125×15 =1875 你好,本题已解答,如果满意,请点右上角“采纳答案”。

36x17十36x82十36 =36x(17+82+1) =36x100 =3600

用简便方法运算 18x97十98x82 =18x97十97x82+1×82 =97×(18+82)+82 =97×100+82 =9782

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