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