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简便计算.(要写出主要简便过程)1113×38+58×111314×37+47÷41718×910+1718÷10.
题目详情
简便计算.(要写出主要简便过程)
×
+
×
×
+
÷4
×
+
÷10.
11 |
13 |
3 |
8 |
5 |
8 |
11 |
13 |
1 |
4 |
3 |
7 |
4 |
7 |
17 |
18 |
9 |
10 |
17 |
18 |
▼优质解答
答案和解析
(1)
×
+
×
=(
+
)×
=1×
=
;
(2)
×
+
÷4
=
×
+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷10
=
×
+
×
=
×(
+
)
=
×1
=
.
11 |
13 |
3 |
8 |
5 |
8 |
11 |
13 |
=(
3 |
8 |
5 |
8 |
11 |
13 |
=1×
11 |
13 |
=
11 |
13 |
(2)
1 |
4 |
3 |
7 |
4 |
7 |
=
1 |
4 |
3 |
7 |
4 |
7 |
1 |
4 |
=
1 |
4 |
3 |
7 |
4 |
7 |
=
1 |
4 |
=
1 |
4 |
(3)
17 |
18 |
9 |
10 |
17 |
18 |
=
17 |
18 |
9 |
10 |
17 |
18 |
1 |
10 |
=
17 |
18 |
9 |
10 |
1 |
10 |
=
17 |
18 |
=
17 |
18 |
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