Oefen met erbij en eraf tot 100
In de mix
1.
70
60
–
=
2.
70
60
–
=
3.
60
20
–
=
4.
70
30
–
=
5.
100
80
–
=
6.
50
40
–
=
7.
20
0
+
=
8.
40
20
+
=
9.
30
10
+
=
10.
20
10
+
=
11.
50
10
+
=
12.
70
30
+
=
13.
30
20
–
=
14.
30
40
+
=
15.
60
20
–
=
16.
50
20
–
=
17.
40
10
+
=
18.
20
0
+
=
19.
50
50
+
=
20.
20
20
+
=
21.
20
0
+
=
22.
20
10
+
=
23.
30
20
–
=
24.
30
20
–
=