數字遊戲
請在4個4之間填上運算符號+、-、×、÷或括號( ),使下面的等式成立。
1
4
4
4
4
=
1
2
4
4
4
4
=
2
3
4
4
4
4
=
3
4
4
4
4
4
=
4
5
4
4
4
4
=
5
6
4
4
4
4
=
6
7
4
4
4
4
=
7
8
4
4
4
4
=
8
9
4
4
4
4
=
9
1
4
×
4
÷
(
4
×
4
)
=
1
2
4
÷
4
+
4
÷
4
=
2
3
(
4
+
4
+
4
)
÷
4
=
3
4
(
4
-
4
)
×
4
+
4
=
4
5
(
4
×
4
+
4
)
÷
4
=
5
6
(
4
+
4
)
÷
4
+
4
=
6
7
4
+
4
-
4
÷
4
=
7
8
4
×
4
-
(
4
+
4
)
=
8
9
4
÷
4
+
4
+
4
=
9