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