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