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