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