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