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375 1034 966 125简便

(375+1034)+(966+125)=375+125+1034+966=500+2000=2500

(375+1034)+(966+125)计算过程如下(375+1034)+(966+125) =(375+125)+(1034+966) =500+2000 =2500

括号375加1034加括号966+125 (375+1034)+(966+125) =(375+125)+(1034+966) =500+2000 =2500

括号375+134加括号966+125括号解:采用结合律,原式=(375+134)+(966+125)=(375+125)+(134+966)=500+1100=1600

简便计算375十274十125=375+125+274=500+274=774

①28x11111+9999x8=28x11111+1111x9x8=(28+9x8)x1111=100x1111=111100②73x33+66x9=73x33+33x2x9=(73+18)x33=91x33=90x33+1x33=2970+33=3003

375x16=375x4x4=1500x4=6000125x24=125x8x3=1000x3=3000

=375÷125=3*125÷125=3

375-291+125=(375+125)-291=500-291=209

381+378+382+386+375=380*5+(1-2+2+6-5)=1900+2=1902

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