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