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