早教吧作业答案频道 -->数学-->
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.
看了 下面各题,怎样算简便就怎样算...的网友还看了以下:
5+7*8+12/4-2=55+7*8+12/4-2=102等号前面加括号得到后面的数5+7*8+1 2020-03-30 …
类似7/2+7/5=7/2×7/511/6+11/5=11/6×11/5的题解答13+()=13× 2020-04-07 …
(3+5/7-2/3)×(1/5+1/7+1/13)-(1/5-1/7+1/13)×3+(1/5+ 2020-04-27 …
1/1×3×5+1/3×5×7+1/5×7×9+1/7×9×11+1/9×11×13+1/上面这题 2020-05-17 …
探索规律:观察下面由※组成的图案和算式,解答问题:1+3=4=221+3+5=9=321+3+5+ 2020-06-27 …
仔细观察下列等式:23+1=2(3−1)(3+1)(3−1)=2(3−1)3−1=3-125+3= 2020-07-18 …
某数除以7余1,除以5余1,除以12余9,这个数最小是多少?跪求解题方法我按照以下方法也没解出来, 2020-07-19 …
某高中男子体育小组的50m赛跑成绩(单位:s)如下:6.4,6.5,7.0,6.8,7.1,7.3 2020-07-26 …
判断题1,已知工作效率是a,时间是t,工作总量是c=axt.当a=5.8,t=7时,c=39.判断 2020-07-26 …
阅读下文,完成第5―7题。从现代小说奠基者鲁迅开始,乡土小说就显赫的登上了高雅文坛。鲁迅之后,乡土文 2020-11-25 …