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