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