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