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(2008•锦江区)列递等式计算[(2)、(4)简算](1)157×[(1.6+19÷0.84−1718)](2)49×22815+16×19+29×415(3)[2.25+(335−1.21×511)]÷40%(4)1999÷1999199992000+12001.
题目详情
(2008•锦江区)列递等式计算[(2)、(4)简算]
(1)
×[(1.6+
÷0.84−1
)]
(2)
×22
+16×
+
×
(3)[2.25+(3
−1.21×
)]÷40%
(4)1999÷1999
+
.
×[(1.6+
÷0.84−1
)]
(2)
×22
+16×
+
×
(3)[2.25+(3
−1.21×
)]÷40%
(4)1999÷1999
+
.
15 15 7 7
1 1 9 9
7 7 18 18
×22
+16×
+
×
(3)[2.25+(3
−1.21×
)]÷40%
(4)1999÷1999
+
.
4 4 9 9
8 8 15 15
1 1 9 9
2 2 9 9
4 4 15 15
[2.25+(3
−1.21×
)]÷40%
(4)1999÷1999
+
.
3 3 5 5
5 5 11 11
+
.
19999 19999 2000 2000
.
1 1 2001 2001
(1)
15 |
7 |
1 |
9 |
7 |
18 |
(2)
4 |
9 |
8 |
15 |
1 |
9 |
2 |
9 |
4 |
15 |
(3)[2.25+(3
3 |
5 |
5 |
11 |
(4)1999÷1999
19999 |
2000 |
1 |
2001 |
15 |
7 |
1 |
9 |
7 |
18 |
(2)
4 |
9 |
8 |
15 |
1 |
9 |
2 |
9 |
4 |
15 |
(3)[2.25+(3
3 |
5 |
5 |
11 |
(4)1999÷1999
19999 |
2000 |
1 |
2001 |
15 |
7 |
1 |
9 |
7 |
18 |
4 |
9 |
8 |
15 |
1 |
9 |
2 |
9 |
4 |
15 |
(3)[2.25+(3
3 |
5 |
5 |
11 |
(4)1999÷1999
19999 |
2000 |
1 |
2001 |
4 |
9 |
8 |
15 |
1 |
9 |
2 |
9 |
4 |
15 |
[2.25+(3
3 |
5 |
5 |
11 |
(4)1999÷1999
19999 |
2000 |
1 |
2001 |
3 |
5 |
5 |
11 |
19999 |
2000 |
1 |
2001 |
19999 |
2000 |
1 |
2001 |
1 |
2001 |
▼优质解答
答案和解析
(1)157×[(1.6+19÷0.84−1718)],=157×[1.6+25189-1718],=157×[1637945−1718],=157×584117010,=649882;(2)49×22815+16×19+29×415,=49×22815+4×49+49×215,=(22815+4+215)×49,=2623×49,=11...
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