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