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