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