二年级下册万以内加减法口算
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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-
180+
950-
450-
854-
850-
840-
465-
705-
523-
505-
801-
508+
249+
1390+
401+
452+
392-
301+
552+
520+
1170-
470+
580+
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≈
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+250-470
650+590-580
=
=
=
=
950-570+570
450-360+250
=
=
=
460+280-350
630+290-470
=
=
=
=
980-570+490
450-360+580
=
=
= =
294-130+270 350-180+480
= =
= =
370+160-250 240-160+550
= =
=
=
=
=
=
950-
450-
=
=
224-130+640 350-180+647
= =
= =
370+160-280 350-160-190
= = =
=
762-314+218
700-557+344
=
=
=
=
503-239+247
712-536+524
=
=
=
666-354+254
700-538+256
=
=
=
=
543-239+548
728-536+265
=
=
580+250-470
650+590-580
=
=
=
=
950-570+570
450-360+250
=
=
=
460+280-350
630+290-470
=
=
=
=
980-570+490
450-360+580
= =
= =
294-130+270 350-180+480
= =
= =
370+160-250 240-
=
=
=
=