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