672-36+64 1034+78+320+102 25+75-25+75 127+133+184+240 (简便计算,脱式)
问题描述:
672-36+64 1034+78+320+102 25+75-25+75 127+133+184+240 (简便计算,脱式)
答
670+30-36+36 1034+(78+320+2+100)25*(1+3-1+3)(100+100+27+33+40)+240
以后这样的数学题,自己算算就好了
答
672-36+64=672+64-36=736-36=700
1034+78+320+102 =1034+320+(102+78 )=1354+180=1534
25+75-25+75 =75+75=150
127+133+184+240 =(127+133)+184+240 =260+240+184=500+184=684
答
672-36+64
=600+72+64 -36
=600+136-36
=700
1034+78+320+102
=1034+300+20+78+102
=1034+300+200
=1534
25+75-25+75
=25-25+75+75
=75+25+50
=150
127+133+184+240
=127+33+100+240+184
=260+240+184
=500+184
=684