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