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