题目内容
简便计算
÷7+
×
×
+
×
(
+
+
)×12
+
×
.
| 8 |
| 13 |
| 1 |
| 7 |
| 6 |
| 13 |
| 4 |
| 17 |
| 5 |
| 9 |
| 13 |
| 9 |
| 5 |
| 17 |
(
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 11 |
| 5 |
| 7 |
| 4 |
| 11 |
(1)
÷7+
×
,
=(
+
)×
,
=
×
,
=
;
(2)
×
+
×
,
=
×
+
×
,
=
×(
+
),
=
×
,
=
;
(3)(
+
+
)×12,
=
×12+
×12+
×12,
=6+8+9,
=23;
(4)
+
×
,
=
+
×
,
=
×(
+1),
=
×
,
=
.
| 8 |
| 13 |
| 1 |
| 7 |
| 6 |
| 13 |
=(
| 8 |
| 13 |
| 6 |
| 13 |
| 1 |
| 7 |
=
| 14 |
| 13 |
| 1 |
| 7 |
=
| 2 |
| 13 |
(2)
| 4 |
| 17 |
| 5 |
| 9 |
| 13 |
| 9 |
| 5 |
| 17 |
=
| 5 |
| 17 |
| 4 |
| 9 |
| 13 |
| 9 |
| 5 |
| 17 |
=
| 5 |
| 17 |
| 4 |
| 9 |
| 13 |
| 9 |
=
| 5 |
| 17 |
| 17 |
| 9 |
=
| 5 |
| 9 |
(3)(
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
=
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
=6+8+9,
=23;
(4)
| 5 |
| 11 |
| 5 |
| 7 |
| 4 |
| 11 |
=
| 5 |
| 11 |
| 4 |
| 7 |
| 5 |
| 11 |
=
| 5 |
| 11 |
| 4 |
| 7 |
=
| 5 |
| 11 |
| 11 |
| 7 |
=
| 5 |
| 7 |
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