Rekensommen met erbij en eraf tot 50
In de mix
1.
35
30
–
=
2.
30
20
–
=
3.
40
35
–
=
4.
35
15
–
=
5.
40
5
+
=
6.
30
15
+
=
7.
25
5
+
=
8.
25
5
+
=
9.
35
15
+
=
10.
35
30
–
=
11.
25
20
–
=
12.
15
0
+
=
13.
35
15
–
=
14.
15
15
+
=
15.
30
15
+
=
16.
15
20
+
=
17.
35
5
+
=
18.
40
20
–
=
19.
40
25
–
=
20.
30
25
–
=
21.
15
25
+
=
22.
15
5
+
=
23.
20
15
+
=
24.
15
5
+
=