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能简算的要简算3001-19983.9+456+6.1+516(12+13+18)×0.245000-105×340.15÷0.25+0.75×1.2[5815+(116−0.2)×1.5]÷160.
题目详情
能简算的要简算
3001-1998 | 3.9+4
| (
| ||||||||||
5000-105×34 | 0.15÷0.25+0.75×1.2 | [5
|
▼优质解答
答案和解析
(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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