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