Supersnelle erbijsommen en erafsommen tot 12
In de mix
|
1.
2 + 0 =
3
2
4
1
|
2.
9 + 3 =
3
12
1
2
|
3.
3 + 0 =
2
1
4
3
|
4.
3 – 1 =
4
3
2
1
|
|
5.
9 + 3 =
12
2
3
1
|
6.
11 – 0 =
1
11
3
2
|
7.
7 – 7 =
0
4
2
3
|
8.
4 – 0 =
2
3
4
1
|
|
9.
1 + 8 =
1
9
3
2
|
10.
7 – 1 =
2
6
3
1
|
11.
4 + 8 =
12
2
1
3
|
12.
5 – 4 =
4
1
2
3
|
|
13.
9 – 8 =
2
1
4
3
|
14.
2 + 6 =
8
2
1
3
|
15.
1 + 0 =
3
4
1
2
|
16.
1 + 5 =
2
6
1
3
|
|
17.
5 + 6 =
1
3
2
11
|
18.
7 + 1 =
2
3
1
8
|
19.
2 + 4 =
1
6
3
2
|
20.
10 – 1 =
1
3
9
2
|