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