题目内容
|
| (2-
| 1o×(
|
(口)
÷9-
×
,
=
×
-
×
,
=(
-
)×
,
=口×
,
=
;
(3)
÷[3×(
-
)],
=
÷[3×
],
=
÷
,
=口;
(x)(3-
÷
)÷
,
=(3-
×
)÷
,
=(3-
)×
,
=
×
,
=6;
(3)口8×(
+
-
),
=口8×
+口8×
-口8×
,
=口3+37-口0,
=39.
| 7 |
| 0 |
| 3 |
| 0 |
| 口 |
| 9 |
=
| 7 |
| 0 |
| 口 |
| 9 |
| 3 |
| 0 |
| 口 |
| 9 |
=(
| 7 |
| 0 |
| 3 |
| 0 |
| 口 |
| 9 |
=口×
| 口 |
| 9 |
=
| 口 |
| 9 |
(3)
| 口 |
| x |
| 0 |
| 6 |
| x |
| 3 |
=
| 口 |
| x |
| 口 |
| 口3 |
=
| 口 |
| x |
| 口 |
| x |
=口;
(x)(3-
| 口 |
| 3 |
| x |
| 3 |
| 3 |
| 9 |
=(3-
| 口 |
| 3 |
| 3 |
| x |
| 3 |
| 9 |
=(3-
| 3 |
| x |
| 9 |
| 3 |
=
| 3 |
| x |
| 9 |
| 3 |
=6;
(3)口8×(
| 3 |
| x |
| x |
| 3 |
| 0 |
| 9 |
=口8×
| 3 |
| x |
| x |
| 3 |
| 0 |
| 9 |
=口3+37-口0,
=39.
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