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