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