| 计算:88.88×33.34+44.44×33.32. |
| 88.88×33.34+44.44×33.32 =44.44×2×33.34+44.44×33.32 =44.44×(2×33.34)+44.44×33.32 =44.44×66.68+44.44×33.32 =44.44×(66.68+33.32) =44.44×100 =4444. |
关注公众号回复:奥数答案
即可免费获得密码查看答案

[ ]
[ ]
a. a·b=b·a
-(3
-1
)(2)
+
+
-
(3)
-
-
(4)
-(
+
)