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