Oefen met erbij en eraf tot 100
In de mix
1.
62
10
+
=
2.
74
60
–
=
3.
17
23
+
=
4.
10
9
–
=
5.
79
50
–
=
6.
85
5
+
=
7.
28
43
+
=
8.
58
7
+
=
9.
20
53
+
=
10.
15
5
–
=
11.
88
42
–
=
12.
47
9
+
=
13.
5
13
+
=
14.
52
52
–
=
15.
78
77
–
=
16.
53
24
–
=
17.
5
2
–
=
18.
84
11
–
=
19.
8
16
+
=
20.
32
68
+
=
21.
40
57
+
=
22.
7
3
–
=
23.
89
0
+
=
24.
43
29
+
=