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