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