三位数加减法教学内容.doc

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1、__________________________________________________519+171=216+612=160+248=515+449=118+377=865+868=797-338=716-316=983-327=825-332=548-430=783-460=____________________________________________________________________________________________________898-584=830-54=979-605=897-727=750-253=659-567=577-545

2、=641-353=940-456=979-488=680-502=637-631=____________________________________________________________________________________________________489-105=622-615=308+238=345+543=957-679=342-274=258+553=445+369=468-389=531+975=597+324=385+247=978-199=467+333=356+543=275+345=300-110=170+244=520-155=1000-33

3、3=____________________________________________________________________________________________________246+357=270-144=285+369=700-264=378-197=485+522=377-135=932-920=743-635=622-376=367+68=458+433=116+652=592-60=587+163=________________________________________________________________________________

4、____________________865+868=797-338=160+248=515+449=716-316=979-488=680-502=139+312=323+291=537+385=310+534=637-631=911-75=____________________________________________________________________________________________________489-105=622-615=308+238=345+543=957-679=342-274=258+553=445+369=468-389=531+9

5、75=597+324=385+247=978-199=467+333=356+543=275+345=____________________________________________________________________________________________________300-110=170+244=520-155=1000-333=246+357=270-144=285+369=700-264=378-197=485+522=932-920=743-635=____________________________________________________

6、________________________________________________622-376=367+68=458+433=116+652=592-60=587+163=686-459=338+543=615-29=376-123=89+437=660-619=996-310=381+90=838-423=424-293=____________________________________________________________________________________________________139+465=743-123=467-90=851-72

7、2=655-418=71+83=448+268=16+706=91+88=926-222=536-372=856+123=____________________________________________________________________________________________________454-431=895-74=731+175=674-98=73-60=515