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