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