Oefen de erbijsom en erafsom tot 50
In de mix
|
1.
35 – 5 =
30
2
|
2.
6 – 6 =
0
2
|
3.
31 + 18 =
2
49
|
4.
32 – 12 =
2
20
|
|
5.
30 – 14 =
16
2
|
6.
14 + 29 =
2
43
|
7.
21 + 26 =
47
2
|
8.
15 – 7 =
8
1
|
|
9.
7 – 1 =
6
1
|
10.
11 + 25 =
36
2
|
11.
11 + 8 =
2
19
|
12.
2 – 0 =
2
1
|
|
13.
7 – 3 =
1
4
|
14.
20 + 24 =
2
44
|
15.
8 + 3 =
1
11
|
16.
40 + 6 =
46
2
|
|
17.
5 – 5 =
0
2
|
18.
38 + 2 =
40
2
|
19.
24 – 21 =
1
3
|
20.
6 + 7 =
13
1
|