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