# 二年级口算题：几百几十和整十数的加减法

《几百几十和整十数的加减法》

390+80= 910-20= 370+70= 630-30=

180+50= 530-40= 850+20= 720-90=

480+70= 330-40= 770+90= 350-80=

540+80= 220-70= 140+90= 370-10=

430+20= 950-50= 480+80= 740-80=

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