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