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