300+70=                870-70=               550-100=             700-600=           

40+500=                530-30=                490-200=            420+80=           

900+60=              440-40=               900-80=       190+100=          

10+800=                790-90=                 380-80=        80+400=

50+100=              680-80=               720+80=        120+500=

小神童                            小神童

250＋230=        120＋350=          270＋710=         460＋330=

210＋150=        360＋220=               590＋100=       720＋240= 

440－90=            720＋160=               430＋320=       350－80=  

40+600=            420-70=               350－60=        100-70=   

800-70=              490-20=                800－90=               630-50=

小神童                            小神童

1÷1=                40÷8=            410－200=           550+70=

9×4=              8×3=            9×7=                 700-80=

210+30=          360+40=           180-20=              770-70=           

60+290=            0+30=           460＋100=           650＋30= 

820+70=             550－200=        900＋460=           600+390=

小神童                            小神童

500+500=         580＋300=           800－20=         610－600=

330＋60=               540-120=               40-8=          800-400=          

150-50=             0×3=                    420－10=           1000-500=            

720－420=             470＋80=          140＋80=          610＋70=  

170＋120=         7÷5=                 320-100=           0÷3=下载本文