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