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