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