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