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