商店上午运来苹果4吨，下午运来6吨，一共用5天就把这些苹果全部售出，平均每天售出苹果多少千克？
1﹣= ．
1+3= ．
= ．
口算 55+37= 80﹣26= 1400﹣800= 2+210= 9+300= 82+0= 1﹣= += ﹣= ．
口算我最棒.+=+=﹣=﹣=+= 1+=﹣0.2=+0.3=+= 1﹣+=﹣﹣=++=
= ．
+3= ．
= ．
= 
+
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﹣
= ．
+
=
+
=
﹣
﹣
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+
= 1+
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﹣0.2=
+0.3=
+
= 1﹣
+
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