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简便计算55x13+45x13

原式=56x13+45x13-13=(56+45-1)x13=(101-1)x13=100x13=1300 供参考.

原式=(44+1)x13/44=44x13/44+1x13/44=13+13/44=13又13/44

55x45+45x55+55x10=55*(45+45+10)=55*100=5500

=(45+55)X55=100X55=5500 望采纳

77x13-32x13 +55x13=13*(77-32+55)=13*100=1300

①55X35一45x35=(55一45)*35=350,②45*28十56*28一28=(45十56一1)X28=100X28=2800

55x46十45x46简便计算=46X(55+45)=46x100=4600

=45乘以(213-13)=45乘以200=9000

45x55+55x55=(45+55)x55=100x55=5500

45x36+55x38用简算方法解:采用分配律,原式=45x36+55x38=45x36+55x36+2x55=(45+55)x36+110=100x36+110=3600+110=3710

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