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