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