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