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