题目内容
|
4-
| ||||||||||||
(
|
|
(1)
×91×
,
=
×7×2,
=
;
(2)4-
×
,
=4-
,
=3
;
(3)(
+
)×60,
=
×60+
×60,
=50+12,
=62;
(4)
×
+
×
,
=
×(
+
),
=
×1,
=
.
| 7 |
| 9 |
| 2 |
| 13 |
=
| 7 |
| 9 |
=
| 98 |
| 9 |
(2)4-
| 6 |
| 7 |
| 5 |
| 6 |
=4-
| 5 |
| 7 |
=3
| 2 |
| 7 |
(3)(
| 5 |
| 6 |
| 1 |
| 5 |
=
| 5 |
| 6 |
| 1 |
| 5 |
=50+12,
=62;
(4)
| 7 |
| 8 |
| 4 |
| 5 |
| 7 |
| 8 |
| 1 |
| 5 |
=
| 7 |
| 8 |
| 4 |
| 5 |
| 1 |
| 5 |
=
| 7 |
| 8 |
=
| 7 |
| 8 |
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