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