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