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