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神机妙算:2842÷14+74×389÷(56-34)3.6×99+3.634÷(35×38)45×67+17÷5472×(59-512)
题目详情
神机妙算:
2842÷14+74×3
÷(
-
)
3.6×99+3.6
÷(
×
)
×
+
÷
72×(
-
)
2842÷14+74×3
8 |
9 |
5 |
6 |
3 |
4 |
3.6×99+3.6
3 |
4 |
3 |
5 |
3 |
8 |
4 |
5 |
6 |
7 |
1 |
7 |
5 |
4 |
72×(
5 |
9 |
5 |
12 |
▼优质解答
答案和解析
(1)2842÷14+74×3
=2848÷7÷2+74×3,
=203+222,
=425;
(2)
÷(
-
)
=
×12,
=10
;
(3)3.6×99+3.6
=(99+1)×3.6,
=100×3.6,
=360;
(4)
÷(
×
)
=
×
,
=
;
(5)
×
+
÷
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(6)72×(
-
)
=72×
-72×
,
=40-30,
=10.
=2848÷7÷2+74×3,
=203+222,
=425;
(2)
8 |
9 |
5 |
6 |
3 |
4 |
=
8 |
9 |
=10
2 |
3 |
(3)3.6×99+3.6
=(99+1)×3.6,
=100×3.6,
=360;
(4)
3 |
4 |
3 |
5 |
3 |
8 |
=
3 |
4 |
40 |
9 |
=
10 |
3 |
(5)
4 |
5 |
6 |
7 |
1 |
7 |
5 |
4 |
=
4 |
5 |
6 |
7 |
1 |
7 |
4 |
5 |
=(
6 |
7 |
1 |
7 |
4 |
5 |
=1×
4 |
5 |
=
4 |
5 |
(6)72×(
5 |
9 |
5 |
12 |
=72×
5 |
9 |
5 |
12 |
=40-30,
=10.
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