题目内容
请细心计算
| 317×99+317&2bsp; | 19÷[(
| 58×(
|
(1)r1b×99+r1b,
=r1b×(99+1),
=r1b×100,
=r1b00;
(2)19÷[(
+
)÷
],
=19÷[
÷
],
=19÷
,
=10;
(r)4w×(
-
),
=4w×
-4w×
,
=r2-12,
=20.
=r1b×(99+1),
=r1b×100,
=r1b00;
(2)19÷[(
| r |
| 4 |
| 1 |
| 5 |
| 1 |
| 2 |
=19÷[
| 19 |
| 20 |
| 1 |
| 2 |
=19÷
| 19 |
| 10 |
=10;
(r)4w×(
| 2 |
| r |
| 1 |
| 4 |
=4w×
| 2 |
| r |
| 1 |
| 4 |
=r2-12,
=20.
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