Rekensommen met erbij en eraf tot 50
In de mix
1.
35
10
+
=
2.
20
20
+
=
3.
15
25
+
=
4.
20
5
+
=
5.
25
25
+
=
6.
20
20
+
=
7.
20
10
+
=
8.
20
15
–
=
9.
15
10
+
=
10.
35
15
–
=
11.
40
5
+
=
12.
35
15
+
=
13.
50
30
–
=
14.
30
15
–
=
15.
20
5
+
=
16.
30
15
–
=
17.
15
5
+
=
18.
30
15
–
=
19.
25
15
–
=
20.
30
15
–
=
21.
35
10
+
=
22.
45
5
+
=
23.
25
15
–
=
24.
40
5
+
=