五年级口算题
-
一、口算。结果请用最简分数表示。
1
1
1
1
2
1
4
1
7
3
+
=
-
=
-
=
-
=
-
=
2
3
2
4
5<
/p>
5
7
7
8
8
1
2
5
2
1
1
3
1
2
1
+
=
-
=
+
=
-
=
+
=
10
5
6
3
3
5
8
4
3
p>
3
5
5
9
1
4
2
1
1
1
1
< br>-
=
-
=
-
=
+
=
-
=
12<
/p>
12
10
10
5
5
6
3
2
p>
8
3
3
1
1
4
3
7
5
5
+
< br>=
-
=
+
=
1
-
=
+
=
8
p>
8
2
5
7
7
8
6
6
5
3
1
< br>9
3
5
5
3
5
1
-
=
+
=
-
=
-
=
+
=
12<
/p>
5
2
10
10<
/p>
7
7
8
8
1
7
1
3
3
1
9
1
9
3
+
=
+
=
+
=
-
=
-
=
6
p>
12
4
4
7
2
10
2
10
5
5
8
1
7
+
=
+
=
9
9
8
p>
8
19
13
19
3
-
=
+
=
p>
24
24
36
36
3
4
11
1<
/p>
1
1
12
3
p>
+
=
-
=
-
=
-
=
p>
7
7
8
8
4
9
13
13
8
4
1
1
1
3
1
1
< br>7
3
3
+
+
=
1
-
-
=
+
+
=
-
+
=
p>
9
11
9
6
6
4
4
4
8
8
8
+
-
=
=
-
=
+
=
+
=
-
=
1
p>
1
4
3
7
5
5
-
=
+
=
1
-
=
+
=
2
p>
5
7
7
8
6
6
5
3
1
1
1
< br>2
1
1
-
=
+
=
-
=
-
=
12
5
2
2
< br>4
5
5
4
1
7
3
3
1
9
1
9
3
p>
-
=
-
=
+
=
-
=
-
=
7
p>
7
8
8
7
2
10
2
10
5
1
2
5
2
+
=
-
=
10
5
6
3
+
=
-
=
二、计算(能简算的要简算)
。
p>
5
3
1
1
5
3
1
1
(
1
)
-
+
(
2
)
1
p>
-
+
(
3
)
+
2
-
1
8
10
4
(
4
p>
)
5
3
2
1
5
-
2
3
+
3
6
p>
(
7
)
2
-
1
7
8
-
8
(
10
)<
/p>
9
3
10
+
3
20
-
15
p>
(
13
)
2
5
2
7
6
-﹙
3
+
12
)
(
16
)<
/p>
1.875
+
2
3
24
48
4
5
2
(
5
p>
)
5
7
-
4
15
<
/p>
+
2
2
3
3
2
7
-
15
(<
/p>
6
)
1
4
-﹙
4
-
3
)
(
8
p>
)
1
2
3
+
5
3
8
-
3
< br>3
4
(
9
)
4
1
1
5
-
4
+
3
(<
/p>
11
)
1
-
p>
7
3
27
13
p>
5
12
+
4
(
12
)
28
+﹙
14
-
7
)
p>
(
14
)
15
p>
1
4
-
5
1
2
+
7
5
6
< br>
(
15
)
1
5
1
1
6
-﹙
3
3
-
1
2
p>
)
17
)
1
2
7
8
+
15
+
8
(
18
)
5
+
3
-
1
6
4
3
(
(
19
)
11
12
-
(
1
6
+
1
8
)
(
20
)
11
-
7
10
-
3
10
(<
/p>
21
)
7
12<
/p>
-
(
3
4
-
1
2
)
3
5
1
4
2
1
5
2
4
p>
+
7
+
2
5
+
3
+
5
17
-
4
51
+
3
1
p>
-
17
18
-
p>
1
18
7
10
-
(
3
3
11
15
8
7
-
10
)
12
+
16
+
15
5
12
+
3
4
+
1
12
7
10
-
3
8
-
1
8
1
8
+
2
15
+
7
8
5
11
1<
/p>
1
7
3
6
+
3
4
-
1
3
12
-
(
6
+
8
)
11
-
7
3
1
10
-
10
12
-
(
4
-
2
)
1
2
-(
3
4
-
3
8
)
5
6
-
(
1
3
+
3
10
)
2
3
+
5
6
-
1
6
(
7
)<
/p>
X+
2
7
=
p>
2
3
(
8
)
X
-
1
6
=
3
8
<
/p>
(
9
)
1
5
+
X=
2
3
1
p>
2
4
1
1
3
1
7
+x=
3
5
-x=
4
x-
6
=
8
5
+
X=<
/p>
2
3