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