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