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