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