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