206+997巧算
206+997巧算 -
206+997=206+1000-3=203+1000=1203
1003×997巧算见图,
206+997=206+1000-3=203+1000=1203
1003×997巧算见图,
997+(6-5)(4-3)(2-1)997+1+1+1 =1000
467+ 997巧算=467+1000-3 =1467-3 =1464
506+997用巧算怎么算 -
506+997=(500+6)(1000-3)500+1000+6-3=1503
997✖️25+75=997*25+25*3=25*(997+3)25*1000=25000
997 98 9 6怎么巧算_百度作业帮 -
=(997+3)(98+2)(9+1)(6-3-2-1)1000+100+10+0 =1110
199x6+4x997-1997 =(200-1)x6+4x997-(1000+997)=1200-6+(4-1)x(1000-3)-1000 =1200-6+3000-9-1000 =3200-15 =3185
997乘以7+216巧算 -
997×7+216 =1000×7-3×7+216 =7000-21+216 =7000+﹙216-21﹚=7000+195 =7195
469+997 =469+(1000一3)=469+1000一3 =1466