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