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