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