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