Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
21 – 4 =
17
2
|
2.
49 + 0 =
49
2
|
3.
45 + 3 =
2
48
|
4.
7 + 30 =
37
2
|
|
5.
21 + 0 =
2
21
|
6.
50 – 20 =
30
2
|
7.
38 + 12 =
50
2
|
8.
24 + 9 =
2
33
|
|
9.
23 + 9 =
2
32
|
10.
23 – 23 =
2
0
|
11.
27 + 14 =
41
2
|
12.
40 – 38 =
2
1
|
|
13.
26 + 24 =
2
50
|
14.
18 + 7 =
2
25
|
15.
11 + 28 =
39
2
|
16.
31 – 19 =
1
12
|
|
17.
32 – 18 =
1
14
|
18.
17 – 14 =
3
1
|
19.
42 – 1 =
2
41
|
20.
26 – 23 =
1
3
|