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