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