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