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128×5+5×74简算

128×5+5×74 =(128+74)×5 =5×202 =5×200+5×2 =1000+10 =1010

25x5+74x5+5 =5x(25+74+1) =5x100 =500

125×5+5×74 =5x(125+74) =5x199 =5x(200-1) =5x200-5x1 =1000-5 =995 谢谢,请采纳

解答:你好 我来帮助你解答! 原式子:126×5+5×74 (提公因式5) =5×(126+74) =5×200 =1000 祝你学习进步!!!!!1 楼主补充题目: 回答:15X(42+38)=1200元。 但愿对你帮助!!!!欢迎追问!

①26×5+74×5+5 =(26+74)×5+5=500+5=505②6.74+12.62+24.38+3.26=(6.74+3.26)+(12.62+24.38)=10+37=47③0.89×4.8+5.2×0.89 =0.89×(4.8+5.2)=0.89×10=8.9④0.4×99+0.4 =0.4×(99+1)=0.4×100=40⑤34.5-(17.2+4.5)=34.5-4.5-17.2=30-17.2=12.8...

解:300^[(86一74)X5] =300^[12X5] =300^60 =90000^30 =8100000000^15 =8.1X10^9X8.1X10^14 =65.61X10^23 =6.561X10^24

25×5+74×5+5 =5×(25+74+1) =5×100 =500 回答完毕~ 有疑问请追问,我一定尽快回复你~ 无疑问请点击【采纳】,同时预祝学习进步~\(^o^)/~ 我不是学霸,叫我赌神~\(^o^)/~~\(^o^)/~~\(^o^)/~~\(^o^)/~

126*5+5*74 =(126+74)*5 =200*5 =1000

=(74+5)✘5/74 =74✘5/74+5✘5/74 =5+25/74 =5又25/74

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