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