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