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