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