Los de erbijsom en erafsom tot 20 op
In de mix
|
1.
13 – 11 =
2
1
3
4
|
2.
14 – 13 =
4
2
3
1
|
3.
1 + 13 =
1
2
3
14
|
4.
20 + 0 =
20
2
4
3
|
|
5.
18 – 1 =
17
2
3
4
|
6.
17 – 5 =
3
12
2
1
|
7.
13 – 5 =
1
8
3
2
|
8.
15 + 0 =
3
1
15
2
|
|
9.
14 + 6 =
3
20
2
4
|
10.
7 – 1 =
3
1
2
6
|
11.
16 – 4 =
3
12
1
2
|
12.
19 – 19 =
4
0
2
3
|
|
13.
7 – 0 =
1
2
3
7
|
14.
15 + 5 =
4
2
3
20
|
15.
3 – 1 =
1
3
4
2
|
16.
11 + 3 =
3
1
14
2
|
|
17.
3 – 1 =
3
1
2
4
|
18.
19 – 14 =
3
5
1
2
|
19.
3 + 15 =
18
4
3
2
|
20.
1 + 5 =
3
2
1
6
|