Oefen de erbijsommen tot 20

Erbijsommen
1.
5 + 12 =
8
3
17
11
2.
5 + 2 =
6
12
7
3
3.
15 + 3 =
12
13
2
18
4.
11 + 4 =
10
5
8
15
5.
16 + 1 =
4
6
10
17
6.
11 + 6 =
11
17
10
7
7.
17 + 0 =
11
5
10
17
8.
10 + 7 =
2
17
12
3
9.
2 + 1 =
8
3
4
7
10.
4 + 4 =
2
8
13
11
11.
20 + 0 =
14
13
20
8
12.
19 + 1 =
6
20
4
5
13.
15 + 0 =
10
2
3
15
14.
17 + 0 =
9
17
3
7
15.
4 + 14 =
5
18
6
1
16.
4 + 7 =
10
5
11
13
17.
14 + 5 =
1
6
19
10
18.
4 + 1 =
5
2
8
4
19.
7 + 7 =
1
12
14
5
20.
11 + 8 =
19
7
2
10

Oefen de erbijsommen tot 20
| ANTWOORDEN

Erbijsommen
1.
5 + 12 =
8
3
17
11
2.
5 + 2 =
6
12
7
3
3.
15 + 3 =
12
13
2
18
4.
11 + 4 =
10
5
8
15
5.
16 + 1 =
4
6
10
17
6.
11 + 6 =
11
17
10
7
7.
17 + 0 =
11
5
10
17
8.
10 + 7 =
2
17
12
3
9.
2 + 1 =
8
3
4
7
10.
4 + 4 =
2
8
13
11
11.
20 + 0 =
14
13
20
8
12.
19 + 1 =
6
20
4
5
13.
15 + 0 =
10
2
3
15
14.
17 + 0 =
9
17
3
7
15.
4 + 14 =
5
18
6
1
16.
4 + 7 =
10
5
11
13
17.
14 + 5 =
1
6
19
10
18.
4 + 1 =
5
2
8
4
19.
7 + 7 =
1
12
14
5
20.
11 + 8 =
19
7
2
10