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