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