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