问题 解答题
口算:
160+270=730-250=260+90=36+74=2400÷200=
770+140=11×500=9900÷900=22÷22×56÷56=12÷(10×6-54)=
87+87÷87-87=50×42×20=970-174-326=1250×80=
答案

160+270=430730-250=480260+90=35036+74=1102400÷200=12
770+140=91011×500=55009900÷900=1122÷22×56÷56=112÷(10×6-54)=2
87+87÷87-87=150×42×20=42000970-174-326=4701250×80=100000
故答案为:430,480,350,110,12,910,5500,11,1,2,1,42000,470,100000.

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