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