Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
37 – 22 =
1
15
|
2.
13 + 33 =
46
2
|
3.
49 + 0 =
2
49
|
4.
12 – 7 =
5
1
|
|
5.
31 + 0 =
31
2
|
6.
47 – 5 =
2
42
|
7.
46 – 31 =
15
1
|
8.
10 + 15 =
2
25
|
|
9.
28 + 2 =
2
30
|
10.
50 – 49 =
1
2
|
11.
48 – 20 =
28
2
|
12.
25 + 17 =
2
42
|
|
13.
36 + 0 =
36
2
|
14.
18 + 16 =
2
34
|
15.
35 + 10 =
45
2
|
16.
16 + 16 =
2
32
|
|
17.
47 – 1 =
2
46
|
18.
5 + 23 =
28
2
|
19.
11 + 14 =
25
2
|
20.
38 – 10 =
2
28
|