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