Oefen de erbijsommen tot 20

Erbijsommen
1.
18 + 0 =
2.
10 + 5 =
3.
8 + 10 =
4.
10 + 9 =
5.
1 + 19 =
6.
3 + 4 =
7.
13 + 0 =
8.
6 + 14 =
9.
15 + 5 =
10.
18 + 2 =
11.
19 + 1 =
12.
17 + 3 =
13.
18 + 2 =
14.
19 + 0 =
15.
13 + 6 =
16.
15 + 2 =
17.
4 + 11 =
18.
12 + 7 =
19.
3 + 13 =
20.
2 + 9 =
21.
15 + 1 =
22.
2 + 15 =
23.
19 + 1 =
24.
20 + 0 =
25.
20 + 0 =
26.
1 + 10 =
27.
11 + 3 =
28.
7 + 9 =
29.
17 + 0 =
30.
10 + 7 =
31.
18 + 0 =
32.
17 + 2 =
33.
4 + 7 =

Oefen de erbijsommen tot 20
| ANTWOORDEN

Erbijsommen
1.
18 + 0 =
18
2.
10 + 5 =
15
3.
8 + 10 =
18
4.
10 + 9 =
19
5.
1 + 19 =
20
6.
3 + 4 =
7
7.
13 + 0 =
13
8.
6 + 14 =
20
9.
15 + 5 =
20
10.
18 + 2 =
20
11.
19 + 1 =
20
12.
17 + 3 =
20
13.
18 + 2 =
20
14.
19 + 0 =
19
15.
13 + 6 =
19
16.
15 + 2 =
17
17.
4 + 11 =
15
18.
12 + 7 =
19
19.
3 + 13 =
16
20.
2 + 9 =
11
21.
15 + 1 =
16
22.
2 + 15 =
17
23.
19 + 1 =
20
24.
20 + 0 =
20
25.
20 + 0 =
20
26.
1 + 10 =
11
27.
11 + 3 =
14
28.
7 + 9 =
16
29.
17 + 0 =
17
30.
10 + 7 =
17
31.
18 + 0 =
18
32.
17 + 2 =
19
33.
4 + 7 =
11