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