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