题目内容
(1)
÷
×
(2)(
-
)÷
(3)
×
+
÷9
(4)5-(
÷
+
)
| 2 |
| 5 |
| 1 |
| 5 |
| 1 |
| 6 |
(2)(
| 3 |
| 4 |
| 3 |
| 5 |
| 7 |
| 10 |
(3)
| 3 |
| 4 |
| 1 |
| 9 |
| 1 |
| 4 |
(4)5-(
| 3 |
| 10 |
| 6 |
| 7 |
| 3 |
| 4 |
(1)
÷
×
,
=2×
,
=
;
(2)(
-
)÷
,
=
×
,
=
;
(3)
×
+
÷9,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(4)5-(
÷
+
),
=5-(
+
),
=5-
,
=3
.
| 2 |
| 5 |
| 1 |
| 5 |
| 1 |
| 6 |
=2×
| 1 |
| 6 |
=
| 1 |
| 3 |
(2)(
| 3 |
| 4 |
| 3 |
| 5 |
| 7 |
| 10 |
=
| 3 |
| 20 |
| 10 |
| 7 |
=
| 3 |
| 14 |
(3)
| 3 |
| 4 |
| 1 |
| 9 |
| 1 |
| 4 |
=
| 3 |
| 4 |
| 1 |
| 9 |
| 1 |
| 4 |
| 1 |
| 9 |
=(
| 3 |
| 4 |
| 1 |
| 4 |
| 1 |
| 9 |
=1×
| 1 |
| 9 |
=
| 1 |
| 9 |
(4)5-(
| 3 |
| 10 |
| 6 |
| 7 |
| 3 |
| 4 |
=5-(
| 7 |
| 20 |
| 3 |
| 4 |
=5-
| 11 |
| 10 |
=3
| 9 |
| 10 |
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