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