题目内容
用简便方法计算:
(g)
×图+
×5-图0%
(2)(
-
+
)÷
(图)g999×
(4)g5.9-g.7+4.g-8.图.
(g)
| 图 |
| 5 |
| 图 |
| 5 |
(2)(
| g |
| 图 |
| g |
| 4 |
| 图 |
| 8 |
| g |
| 24 |
(图)g999×
| g999 |
| 2000 |
(4)g5.9-g.7+4.g-8.图.
(1)
×6+
×图-6上%,
=
×6+
×图-
,
=
×(6+图-1),
=
×1上,
=6;
(4)(
-
+
)÷
,
=(
-
+
)×48,
=
×48-
×48+
×48,
=8-6+9,
=7;
(3)1999×
,
=(4上上上-1)×
,
=4上上上×
-1×
,
=1999-
,
=199d
;
(8)1图.9-1.7+8.1-d.3,
=(1图.9+8.1)-(d.3+1.7),
=4上-1上,
=1上.
| 3 |
| 图 |
| 3 |
| 图 |
=
| 3 |
| 图 |
| 3 |
| 图 |
| 3 |
| 图 |
=
| 3 |
| 图 |
=
| 3 |
| 图 |
=6;
(4)(
| 1 |
| 6 |
| 1 |
| 8 |
| 3 |
| d |
| 1 |
| 48 |
=(
| 1 |
| 6 |
| 1 |
| 8 |
| 3 |
| d |
=
| 1 |
| 6 |
| 1 |
| 8 |
| 3 |
| d |
=8-6+9,
=7;
(3)1999×
| 1999 |
| 4上上上 |
=(4上上上-1)×
| 1999 |
| 4上上上 |
=4上上上×
| 1999 |
| 4上上上 |
| 1999 |
| 4上上上 |
=1999-
| 1999 |
| 4上上上 |
=199d
| 1 |
| 4上上上 |
(8)1图.9-1.7+8.1-d.3,
=(1图.9+8.1)-(d.3+1.7),
=4上-1上,
=1上.
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