题目内容
能简算的要简算
| 3001-1998 | 3.9+4
| (
| ||||||||||
| 5000-105×34 | 0.15÷0.25+0.75×1.2 | [5
|
(1)3001-1998,
=(3000+1)-(2000-2),
=(3000-2000)+3,
=1003;
(2)3.9+4
+6.1+5
,
=(3.9+6.1)+(4
+5
),
=10+10,
=20;
(3)(
+
+
)×0.24,
=
×0.24+
×0.24+
×0.24,
=0.12+0.08+0.03,
=0.23;
(4)5000-105×34,
=5000-3570,
=1430;
(5)0.15÷0.25+0.75×1.2,
=0.6+0.9,
=1.5;
(6)[5
+(1
-0.2)×1.5]÷
,
=[5
+
×1.5]÷
,
=[
+
]×60,
=
×60+
×60,
=332+87,
=419.
=(3000+1)-(2000-2),
=(3000-2000)+3,
=1003;
(2)3.9+4
| 5 |
| 6 |
| 1 |
| 6 |
=(3.9+6.1)+(4
| 5 |
| 6 |
| 1 |
| 6 |
=10+10,
=20;
(3)(
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 8 |
=
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 8 |
=0.12+0.08+0.03,
=0.23;
(4)5000-105×34,
=5000-3570,
=1430;
(5)0.15÷0.25+0.75×1.2,
=0.6+0.9,
=1.5;
(6)[5
| 8 |
| 15 |
| 1 |
| 6 |
| 1 |
| 60 |
=[5
| 8 |
| 15 |
| 29 |
| 30 |
| 1 |
| 60 |
=[
| 83 |
| 15 |
| 29 |
| 20 |
=
| 83 |
| 15 |
| 29 |
| 20 |
=332+87,
=419.
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