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