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