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