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