四年级数学下加减法简便计算练习题

怎样简便就怎样计算

378+524+76         167+2+33          427+58-27            58+39+42+61          427-+73           

136+57-36           123+86-23          438+34+162          35+13+65+87          183+256+117-156

367+278-267+123          239+233-139+67           867+234+133+166           258+232-158+168  

135+147+165+153         287+135+123+165          258+143-158+157           199+124+201+176

218+39+61                   218+138-38             286-23-77           218+523-23            136-29-61            

336-45-55               272-36-              786-38-48           618+147-47         318+52+48               

418+143-43                172-65-35           318+544-44           236-66-34              318+155-55

372-23-77                   686-29-61           518+88+12          618+333-33        636-47-53          

118+123-23             772-56-44                886-43-57            318+41+59         919-43+81

576+（187+24）       576+（187-76）      843-（543-179）      347+（153-129）        947+（372-447）    

771-（+71）        576-（76+59）       576-（176-59）        676-（155-24）        272-（+72）

756-（456-279）       475-（76+75）       375+（187+25）      476+（124-77）       7+（371-247）

246+（153-146）      546+（153-146）       544+（256-447）       976-（71+76）       337-（137-59）        

888-（188-24）       576-（176+72）          666-（466-279）        678-（78+75）      356+(244-)

678-25-(72-22)          876+1-(+76)         (2-21)-(79+92)          (567+32)-(67-68)