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