Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
3 – 0 =
3
1
|
2.
28 – 19 =
1
9
|
3.
3 – 1 =
1
2
|
4.
31 – 30 =
1
2
|
|
5.
29 – 2 =
27
2
|
6.
36 + 10 =
46
2
|
7.
15 + 16 =
31
2
|
8.
43 + 6 =
2
49
|
|
9.
19 + 5 =
24
2
|
10.
49 – 48 =
1
2
|
11.
29 – 0 =
2
29
|
12.
16 – 2 =
1
14
|
|
13.
16 – 13 =
3
1
|
14.
13 + 2 =
1
15
|
15.
47 + 2 =
2
49
|
16.
8 + 12 =
20
2
|
|
17.
6 + 26 =
2
32
|
18.
2 + 39 =
2
41
|
19.
23 – 8 =
15
1
|
20.
35 – 30 =
5
1
|