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