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