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下面各题,怎样算简便就怎样算.(45+14)÷73+710;813÷7+17×513;20-7.8÷(6.2-4.9)
题目详情
下面各题,怎样算简便就怎样算.
(
+
)÷
+
;
÷7+
×
; 20-7.8÷(6.2-4.9)
+
)÷
+
;
÷7+
×
; 20-7.8÷(6.2-4.9)
4 5 4 4 5 5
)÷
+
;
÷7+
×
; 20-7.8÷(6.2-4.9)
1 4 1 1 4 4
+
;
÷7+
×
; 20-7.8÷(6.2-4.9)
7 3 7 7 3 3
;
÷7+
×
; 20-7.8÷(6.2-4.9)
7 10 7 7 10 10
÷7+
×
; 20-7.8÷(6.2-4.9)
8 13 8 8 13 13
×
; 20-7.8÷(6.2-4.9)
1 7 1 1 7 7
; 20-7.8÷(6.2-4.9)
5 13 5 5 13 13
(
4 |
5 |
1 |
4 |
7 |
3 |
7 |
10 |
8 |
13 |
1 |
7 |
5 |
13 |
4 |
5 |
1 |
4 |
7 |
3 |
7 |
10 |
8 |
13 |
1 |
7 |
5 |
13 |
4 |
5 |
1 |
4 |
7 |
3 |
7 |
10 |
8 |
13 |
1 |
7 |
5 |
13 |
1 |
4 |
7 |
3 |
7 |
10 |
8 |
13 |
1 |
7 |
5 |
13 |
7 |
3 |
7 |
10 |
8 |
13 |
1 |
7 |
5 |
13 |
7 |
10 |
8 |
13 |
1 |
7 |
5 |
13 |
8 |
13 |
1 |
7 |
5 |
13 |
1 |
7 |
5 |
13 |
5 |
13 |
▼优质解答
答案和解析
(1)(
+
)÷
+
=
÷
+
=
+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
4 5 4 4 45 5 5+
)÷
+
=
÷
+
=
+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 4 1 1 14 4 4)÷
+
=
÷
+
=
+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 3 7 7 73 3 3+
=
÷
+
=
+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 10 7 7 710 10 10
=
÷
+
=
+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
21 20 21 21 2120 20 20÷
+
=
+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 3 7 7 73 3 3+
=
+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 10 7 7 710 10 10
=
+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
9 20 9 9 920 20 20+
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 10 7 7 710 10 10
=
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
23 20 23 23 2320 20 20;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
8 13 8 8 813 13 13÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 7 1 1 17 7 7×
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
5 13 5 5 513 13 13
=
×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
8 13 8 8 813 13 13×
+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 7 1 1 17 7 7+
×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 7 1 1 17 7 7×
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
5 13 5 5 513 13 13
=(
+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
8 13 8 8 813 13 13+
)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
5 13 5 5 513 13 13)×
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 7 1 1 17 7 7
=1×
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 7 1 1 17 7 7
=
;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 7 1 1 17 7 7;
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
4 |
5 |
1 |
4 |
7 |
3 |
7 |
10 |
=
21 |
20 |
7 |
3 |
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
4 |
5 |
1 |
4 |
7 |
3 |
7 |
10 |
=
21 |
20 |
7 |
3 |
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 |
4 |
7 |
3 |
7 |
10 |
=
21 |
20 |
7 |
3 |
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 |
3 |
7 |
10 |
=
21 |
20 |
7 |
3 |
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 |
10 |
=
21 |
20 |
7 |
3 |
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
21 |
20 |
7 |
3 |
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 |
3 |
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 |
10 |
=
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
9 |
20 |
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
7 |
10 |
=
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
23 |
20 |
(2)
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
8 |
13 |
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 |
7 |
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
5 |
13 |
=
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
8 |
13 |
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 |
7 |
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 |
7 |
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
5 |
13 |
=(
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
8 |
13 |
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
5 |
13 |
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 |
7 |
=1×
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 |
7 |
=
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
1 |
7 |
(3)20-7.8÷(6.2-4.9)
=20-7.8÷1.3
=20-6
=14.
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