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