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