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