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