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