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