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