Supersnelle erbijsommen en erafsommen tot 20

In de mix
1.
3 1 =
2
1
3
4
2.
12 6 =
2
6
3
1
3.
1 + 6 =
2
7
1
3
4.
15 9 =
2
6
3
1
5.
15 6 =
9
3
2
1
6.
14 + 0 =
14
2
1
3
7.
11 + 3 =
2
14
3
1
8.
17 + 0 =
17
3
4
2
9.
6 + 9 =
3
15
1
2
10.
10 + 4 =
3
14
1
2
11.
19 + 1 =
4
20
3
2
12.
13 11 =
2
1
4
3
13.
20 + 0 =
2
20
3
4
14.
19 + 1 =
4
2
20
3
15.
12 + 4 =
4
3
2
16
16.
4 2 =
2
1
4
3
17.
8 + 0 =
8
3
2
1
18.
15 8 =
7
1
2
3
19.
3 2 =
4
2
1
3
20.
14 10 =
4
3
1
2

Supersnelle erbijsommen en erafsommen tot 20
| ANTWOORDEN

In de mix
1.
3 1 =
2
1
3
4
2.
12 6 =
2
6
3
1
3.
1 + 6 =
2
7
1
3
4.
15 9 =
2
6
3
1
5.
15 6 =
9
3
2
1
6.
14 + 0 =
14
2
1
3
7.
11 + 3 =
2
14
3
1
8.
17 + 0 =
17
3
4
2
9.
6 + 9 =
3
15
1
2
10.
10 + 4 =
3
14
1
2
11.
19 + 1 =
4
20
3
2
12.
13 11 =
2
1
4
3
13.
20 + 0 =
2
20
3
4
14.
19 + 1 =
4
2
20
3
15.
12 + 4 =
4
3
2
16
16.
4 2 =
2
1
4
3
17.
8 + 0 =
8
3
2
1
18.
15 8 =
7
1
2
3
19.
3 2 =
4
2
1
3
20.
14 10 =
4
3
1
2