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