二年级下册万以内加减法口算.docx
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520+490=620-570=1170-280=
470+580=720-590=580+230=
598+204=357+448=250+380=
1072-353=560-390=473+218=
276+361=358+587=743-489=
180+250=530+290=950-570=
450-360=280+540=854-180=
850-580=350+160=840-560=
465-396=602-314=705-538=
523-239=725-536=505-356=
801-309≈202+196≈508+198≈
1198-223≈959-357≈249+123≈
1390+653≈999-303≈401+189≈
452+349≈942-601≈392-182≈
301+288≈653-381≈552+749≈
520+490=620-570=1170-280=
470+580=720-590=580+230=
598+204=357+448=250+380=
1072-353=560-390=473+218=
276+361=358+587=743-489=
180+250=530+290=950-570=
450-360=280+540=854-180=
850-580=350+160=840-560=
465-396=602-314=705-538=
523-239=725-536=505-356=
801-309≈202+196≈508+198≈
1198-223≈959-357≈249+123≈
1390+653≈999-303≈401+189≈
452+349≈942-601≈392-182≈
301+288≈653-381≈552+749≈
520+490=620-570=1170-280=
470+580=720-590=580+230=
598+204=357+448=250+380=
1072-353=560-390=473+218=
276+361=358+587=743-489=
180+250=530+290=950-570=
450-360=280+540=854-180=
850-580=350+160=840-560=
465-396=602-314=705-538=
523-239=725-536=505-356=
801-309≈202+196≈508+198≈
1198-223≈959-357≈249+123≈
1390+653≈999-303≈401+189≈
452+349≈942-601≈392-182≈
301+288≈653-381≈552+749≈
580+250-470650+590-580
==
==
950-570+570450-360+250
==
==
224-130+640350-180+647
==
==
370+160-280350-160-190
==
==
762-314+218700-557+344
==
==
503-239+247712-536+524
==
==
460+280-350630+290-470
==
==
980-570+490450-360+580
==
==
294-130+270350-180+480
==
==
370+160-250240-160+550
==
==
666-354+254700-538+256
==
==
543-239+548728-536+265
==
580+250-470650+590-580
==
==
950-570+570450-360+250
==
==
224-130+640350-180+647
==
==
370+160-280350-160-190
==
==
762-314+218700-557+344
==
==
503-239+247712-536+524
==
==
460+280-350630+290-470
==
==
980-570+490450-360+580
==
==
294-130+270350-180+480
==
==
370+160-250240-160+550
==
==
666-354+254700-538+256
==
==
543-239+548728-536+265
==
580+250-470650+590-580
==
==
950-570+570450-360+250
==
==
224-130+640350-180+647
==
==
370+160-280350-160-190
==
==
762-314+218700-557+344
==
==
503-239+247712-536+524
==
=