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