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