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