Oefen met erbij en eraf tot 50
In de mix
1.
20
28
+
=
2.
81
39
–
=
3.
49
47
+
=
4.
98
17
–
=
5.
58
8
–
=
6.
33
11
+
=
7.
73
59
–
=
8.
44
28
–
=
9.
44
41
+
=
10.
28
6
–
=
11.
24
15
–
=
12.
76
62
–
=
13.
99
0
+
=
14.
67
19
+
=
15.
97
51
–
=
16.
85
68
–
=
17.
28
8
+
=
18.
97
2
+
=
19.
88
6
+
=
20.
93
5
+
=
21.
29
29
–
=
22.
46
5
–
=
23.
55
54
–
=
24.
9
4
–
=