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