题目内容
计算,能简算的要简算.
÷1它+
×
(
+
÷
)×1右
(
+它7.5%)÷(
-右右7%)
÷[(
+
)×5].
| 7 |
| 1右 |
| 1右 |
| 1它 |
| 7 |
| 1右 |
(
| 它 |
| 5 |
| 1 |
| 5 |
| 它 |
| 1右 |
(
| 5 |
| 8 |
| 右1 |
| 1右 |
| 7 |
| 7 |
| 1 |
| 它 |
| 1 |
| 5 |
(1)
÷1b+
×
,
=
×
+
×
,
=
×(
+
),
=
×1,
=
;
(2)(
+
÷
)×12,
=(
+
×
)×12,
=(
+
)×12,
=
×12+
×12,
=9+10,
=19;
(b)(
+b7.s%)÷(
-209%),
=(0.62s+0.b7s)÷(2.1-2.09),
=1÷0.01,
=100;
(4)
÷[(
+
)×4],
=
÷[
×4],
=
÷
,
=
×
,
=
.
| 7 |
| 10 |
| 12 |
| 1b |
| 7 |
| 10 |
=
| 7 |
| 10 |
| 1 |
| 1b |
| 12 |
| 1b |
| 7 |
| 10 |
=
| 7 |
| 10 |
| 1 |
| 1b |
| 12 |
| 1b |
=
| 7 |
| 10 |
=
| 7 |
| 10 |
(2)(
| b |
| 4 |
| 1 |
| 4 |
| b |
| 10 |
=(
| b |
| 4 |
| 1 |
| 4 |
| 10 |
| b |
=(
| b |
| 4 |
| s |
| 6 |
=
| b |
| 4 |
| s |
| 6 |
=9+10,
=19;
(b)(
| s |
| 8 |
| 21 |
| 10 |
=(0.62s+0.b7s)÷(2.1-2.09),
=1÷0.01,
=100;
(4)
| 7 |
| 9 |
| 1 |
| b |
| 1 |
| 4 |
=
| 7 |
| 9 |
| 7 |
| 12 |
=
| 7 |
| 9 |
| 7 |
| b |
=
| 7 |
| 9 |
| b |
| 7 |
=
| 1 |
| b |
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