Oefen met erbij en eraf tot 50
In de mix
1.
14
40
+
=
2.
48
24
+
=
3.
38
25
–
=
4.
95
62
–
=
5.
26
16
+
=
6.
92
7
+
=
7.
15
13
–
=
8.
55
37
–
=
9.
63
35
–
=
10.
88
2
+
=
11.
66
27
+
=
12.
31
23
–
=
13.
2
0
–
=
14.
37
58
+
=
15.
92
63
–
=
16.
35
25
+
=
17.
16
10
–
=
18.
70
2
–
=
19.
41
14
–
=
20.
52
10
–
=
21.
13
3
–
=
22.
8
6
–
=
23.
20
11
–
=
24.
100
0
+
=