Los de erbijsom tot 20 op
Erbijsommen
|
1.
10 + 10 =
13
8
10
20
|
2.
17 + 3 =
11
13
20
8
|
3.
17 + 2 =
8
19
2
10
|
4.
7 + 1 =
4
8
13
1
|
|
5.
20 + 0 =
20
3
7
2
|
6.
18 + 1 =
9
14
19
1
|
7.
4 + 10 =
12
13
14
17
|
8.
10 + 10 =
14
4
3
20
|
|
9.
16 + 4 =
13
20
4
3
|
10.
2 + 7 =
4
9
1
10
|
11.
9 + 9 =
7
18
5
11
|
12.
7 + 2 =
5
9
3
2
|
|
13.
16 + 2 =
8
10
11
18
|
14.
20 + 0 =
2
1
20
5
|
15.
11 + 2 =
9
14
13
10
|
16.
6 + 0 =
8
5
3
6
|
|
17.
6 + 2 =
3
5
6
8
|
18.
3 + 13 =
5
3
10
16
|
19.
11 + 3 =
14
7
10
11
|
20.
3 + 16 =
19
5
6
8
|