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