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