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