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