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