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