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