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