Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
41 – 31 =
1
10
|
2.
46 – 11 =
2
35
|
3.
49 + 1 =
50
2
|
4.
32 + 13 =
45
2
|
|
5.
34 + 5 =
39
2
|
6.
2 – 1 =
2
1
|
7.
7 + 32 =
2
39
|
8.
50 + 0 =
50
2
|
|
9.
2 – 1 =
2
1
|
10.
29 + 15 =
44
2
|
11.
37 – 34 =
3
1
|
12.
2 – 1 =
2
1
|
|
13.
5 + 29 =
34
2
|
14.
45 + 5 =
50
2
|
15.
23 + 0 =
23
2
|
16.
20 – 9 =
1
11
|
|
17.
25 + 17 =
42
2
|
18.
14 – 14 =
0
2
|
19.
8 – 3 =
1
5
|
20.
8 + 25 =
2
33
|