Oefen met erbij en eraf tot 50
In de mix
1.
40
20
–
=
2.
20
15
–
=
3.
30
25
–
=
4.
30
25
–
=
5.
15
15
+
=
6.
45
15
–
=
7.
15
20
+
=
8.
25
20
+
=
9.
40
20
–
=
10.
20
15
–
=
11.
25
20
–
=
12.
35
30
–
=
13.
30
15
+
=
14.
40
5
+
=
15.
35
15
–
=
16.
20
20
+
=
17.
15
25
+
=
18.
15
0
+
=
19.
15
15
+
=
20.
15
10
+
=
21.
20
20
+
=
22.
25
20
–
=
23.
15
20
+
=
24.
45
25
–
=