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