Erbijsommen en erafsommen tot 20 oplossen
In de mix
1.
20
13
jimmy
–
=
2.
19
17
jimmy
–
=
3.
13
5
jimmy
+
=
4.
19
16
jimmy
–
=
5.
16
4
jimmy
+
=
6.
15
3
jimmy
+
=
7.
19
16
jimmy
–
=
8.
14
12
jimmy
–
=
9.
12
1
jimmy
+
=
10.
15
4
jimmy
+
=
11.
14
12
jimmy
–
=
12.
15
2
jimmy
+
=
13.
13
12
jimmy
–
=
14.
13
12
jimmy
–
=
15.
19
17
jimmy
–
=
16.
20
14
jimmy
–
=
17.
19
13
jimmy
–
=
18.
12
1
jimmy
+
=
19.
15
14
jimmy
–
=
20.
20
12
jimmy
–
=
21.
14
3
jimmy
+
=
22.
15
13
jimmy
–
=
23.
13
3
jimmy
+
=
24.
15
13
jimmy
–
=
Erbijsommen en erafsommen tot 20 oplossen
| ANTWOORDEN
In de mix
1.
20
13
7
–
=
2.
19
17
2
–
=
3.
13
5
18
+
=
4.
19
16
3
–
=
5.
16
4
20
+
=
6.
15
3
18
+
=
7.
19
16
3
–
=
8.
14
12
2
–
=
9.
12
1
13
+
=
10.
15
4
19
+
=
11.
14
12
2
–
=
12.
15
2
17
+
=
13.
13
12
1
–
=
14.
13
12
1
–
=
15.
19
17
2
–
=
16.
20
14
6
–
=
17.
19
13
6
–
=
18.
12
1
13
+
=
19.
15
14
1
–
=
20.
20
12
8
–
=
21.
14
3
17
+
=
22.
15
13
2
–
=
23.
13
3
16
+
=
24.
15
13
2
–
=