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