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