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