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