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