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