Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
1 – 1 =
0
2
|
2.
10 + 2 =
1
12
|
3.
43 – 22 =
21
2
|
4.
6 – 6 =
0
2
|
|
5.
44 + 2 =
46
2
|
6.
9 – 5 =
4
1
|
7.
2 + 5 =
1
7
|
8.
11 – 2 =
9
1
|
|
9.
11 + 1 =
12
1
|
10.
37 – 0 =
37
2
|
11.
3 + 28 =
31
2
|
12.
15 + 19 =
2
34
|
|
13.
2 – 2 =
2
0
|
14.
36 – 16 =
20
2
|
15.
41 + 1 =
2
42
|
16.
48 – 39 =
9
1
|
|
17.
47 + 3 =
2
50
|
18.
8 – 5 =
1
3
|
19.
35 – 30 =
1
5
|
20.
49 + 1 =
50
2
|