题目内容
脱式计算.(能简算则简算).
[
|
| (50%-
|
(1)[
+(
-
)]×
,
=[
+
]×
,
=
×
,
=
;
(2)
÷8+12.5%×
,
=
×
+
×
,
=
×(
+
),
=
×1,
=
;
(3)(50%-
+
)×12,
=(
-
+
)×12,
=
×12-
×12+
×12,
=6-5+2,
=3.
| 5 |
| 14 |
| 4 |
| 7 |
| 1 |
| 2 |
| 7 |
| 9 |
=[
| 5 |
| 14 |
| 1 |
| 14 |
| 7 |
| 9 |
=
| 3 |
| 7 |
| 7 |
| 9 |
=
| 1 |
| 3 |
(2)
| 7 |
| 13 |
| 6 |
| 13 |
=
| 7 |
| 13 |
| 1 |
| 8 |
| 1 |
| 8 |
| 6 |
| 13 |
=
| 1 |
| 8 |
| 7 |
| 13 |
| 6 |
| 13 |
=
| 1 |
| 8 |
=
| 1 |
| 8 |
(3)(50%-
| 5 |
| 12 |
| 1 |
| 6 |
=(
| 1 |
| 2 |
| 5 |
| 12 |
| 1 |
| 6 |
=
| 1 |
| 2 |
| 5 |
| 12 |
| 1 |
| 6 |
=6-5+2,
=3.
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