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