Los de erafsommen tot 20 op
Erafsommen
|
1.
13 – 2 =
4
11
|
2.
14 – 9 =
9
5
|
3.
12 – 9 =
1
3
|
4.
18 – 15 =
3
2
|
|
5.
4 – 4 =
0
5
|
6.
17 – 2 =
15
7
|
7.
6 – 2 =
4
8
|
8.
16 – 7 =
11
9
|
|
9.
8 – 8 =
1
0
|
10.
18 – 2 =
10
16
|
11.
10 – 2 =
8
9
|
12.
15 – 2 =
13
5
|
|
13.
19 – 12 =
7
9
|
14.
4 – 0 =
5
4
|
15.
18 – 7 =
11
8
|
16.
3 – 3 =
1
0
|
|
17.
9 – 7 =
4
2
|
18.
5 – 0 =
2
5
|
19.
3 – 3 =
3
0
|
20.
18 – 4 =
14
7
|