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