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