Oefen met erbij en eraf tot 100
In de mix
1.
90
80
–
=
2.
100
20
–
=
3.
60
20
–
=
4.
100
60
–
=
5.
20
70
+
=
6.
60
40
–
=
7.
20
10
+
=
8.
50
30
+
=
9.
40
20
+
=
10.
60
40
–
=
11.
30
20
–
=
12.
50
40
–
=
13.
60
30
+
=
14.
30
10
+
=
15.
60
20
+
=
16.
20
50
+
=
17.
60
30
–
=
18.
10
10
+
=
19.
40
40
+
=
20.
100
60
–
=
21.
80
50
–
=
22.
20
20
+
=
23.
80
10
+
=
24.
50
40
–
=