Oefen de erbijsom en erafsom tot 100

In de mix
1.
81 + 4 =
85
2
2.
23 + 70 =
2
93
3.
8 6 =
2
1
4.
46 38 =
1
8
5.
5 + 27 =
32
2
6.
1 + 52 =
53
2
7.
19 + 38 =
57
2
8.
55 + 16 =
71
2
9.
11 9 =
2
1
10.
98 86 =
12
1
11.
55 + 18 =
73
2
12.
85 23 =
2
62
13.
89 + 0 =
2
89
14.
75 54 =
21
2
15.
1 1 =
0
2
16.
73 63 =
1
10
17.
81 15 =
66
2
18.
11 4 =
1
7
19.
85 + 4 =
2
89
20.
33 + 31 =
64
2

Oefen de erbijsom en erafsom tot 100
| ANTWOORDEN

In de mix
1.
81 + 4 =
85
2
2.
23 + 70 =
2
93
3.
8 6 =
2
1
4.
46 38 =
1
8
5.
5 + 27 =
32
2
6.
1 + 52 =
53
2
7.
19 + 38 =
57
2
8.
55 + 16 =
71
2
9.
11 9 =
2
1
10.
98 86 =
12
1
11.
55 + 18 =
73
2
12.
85 23 =
2
62
13.
89 + 0 =
2
89
14.
75 54 =
21
2
15.
1 1 =
0
2
16.
73 63 =
1
10
17.
81 15 =
66
2
18.
11 4 =
1
7
19.
85 + 4 =
2
89
20.
33 + 31 =
64
2