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