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