Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
30 + 5 =
2
35
|
2.
16 + 13 =
2
29
|
3.
3 + 11 =
1
14
|
4.
9 + 27 =
36
2
|
|
5.
49 – 6 =
2
43
|
6.
12 + 8 =
2
20
|
7.
18 – 2 =
2
16
|
8.
12 + 25 =
2
37
|
|
9.
25 + 11 =
36
2
|
10.
28 + 17 =
45
2
|
11.
2 + 23 =
2
25
|
12.
33 + 8 =
41
2
|
|
13.
29 – 11 =
18
2
|
14.
48 – 41 =
1
7
|
15.
27 + 11 =
2
38
|
16.
31 – 1 =
2
30
|
|
17.
4 + 5 =
1
9
|
18.
32 – 20 =
12
1
|
19.
42 + 2 =
2
44
|
20.
38 – 15 =
23
2
|