题目内容
(20的的?东莞模拟)用递等式计算.
①
| ②的.0个×(3.h-0.h)÷6.3 | ③
| ||||||||||||||||
| ④300×ll+300 | ⑤
| ⑥的0-
|
(1)
÷[
×(
+
)],
=
÷[
×
],
=
÷
,
=
;
(m)1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=0.5;
(3)
÷
+
÷
,
=
×
+
×
,
=
+3,
=4
;
(4)307×99+307,
=307×(99+1),
=307×100,
=30700;
(5)
×43+56×75%+0.75,
=0.75×43+56×0.75+0.75,
=0.75×(43+56+1),
=0.75×100,
=75;
(6)10-
-4.m5,
=10-(
+4.m5),
=10-5,
=5.
| 9 |
| m0 |
| 1 |
| m |
| m |
| 5 |
| 4 |
| 5 |
=
| 9 |
| m0 |
| 1 |
| m |
| 6 |
| 5 |
=
| 9 |
| m0 |
| 3 |
| 5 |
=
| 3 |
| 4 |
(m)1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=0.5;
(3)
| 6 |
| 5 |
| 3 |
| 4 |
| 4 |
| 5 |
| 4 |
| 15 |
=
| 6 |
| 5 |
| 4 |
| 3 |
| 4 |
| 5 |
| 15 |
| 4 |
=
| 8 |
| 5 |
=4
| 3 |
| 5 |
(4)307×99+307,
=307×(99+1),
=307×100,
=30700;
(5)
| 3 |
| 4 |
=0.75×43+56×0.75+0.75,
=0.75×(43+56+1),
=0.75×100,
=75;
(6)10-
| 3 |
| 4 |
=10-(
| 3 |
| 4 |
=10-5,
=5.
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