Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
42 + 5 =
2
47
|
2.
13 + 23 =
36
2
|
3.
20 + 27 =
2
47
|
4.
7 – 3 =
4
1
|
|
5.
15 + 0 =
1
15
|
6.
11 – 0 =
1
11
|
7.
25 + 17 =
2
42
|
8.
13 – 13 =
0
2
|
|
9.
26 + 18 =
2
44
|
10.
36 – 24 =
12
1
|
11.
41 + 2 =
2
43
|
12.
23 – 17 =
1
6
|
|
13.
32 + 13 =
45
2
|
14.
14 + 8 =
2
22
|
15.
46 + 1 =
47
2
|
16.
1 + 3 =
1
4
|
|
17.
40 + 1 =
41
2
|
18.
32 – 27 =
5
1
|
19.
8 – 5 =
1
3
|
20.
30 + 17 =
47
2
|