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