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