简便方法计算如下,希望能帮到你的,望采纳:
276+228+353+219
=219+(221+7)+353+276
=(219+221)+(353+7)+276
=440+360+200+76
=1000+76
=1076
原式=276+219+228+353
=495+581
=1076
答:结果为1076。
=300-24+200+28+350+3+220-1
=300+200+350+220+28+3-24-1
=1070+31-25
=1070+6
=1076
276+228+353+219
=219+(221+7)+353+276
=219+221+353+7+276
=440+360+276=1076