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