Oefen met erbij en eraf tot 100
In de mix
1.
60
30
–
=
2.
40
20
–
=
3.
40
60
+
=
4.
90
40
–
=
5.
50
20
–
=
6.
40
40
+
=
7.
20
0
+
=
8.
40
30
–
=
9.
20
0
+
=
10.
70
30
+
=
11.
20
70
+
=
12.
40
30
–
=
13.
100
40
–
=
14.
100
60
–
=
15.
50
10
+
=
16.
20
10
+
=
17.
40
20
+
=
18.
80
40
–
=
19.
40
30
+
=
20.
50
30
–
=
21.
70
50
–
=
22.
80
60
–
=
23.
40
30
–
=
24.
70
20
+
=