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