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