Oefen erbijsommen en erafsommen tot 20
In de mix
1.
4
3
jimmy
–
=
2.
18
6
jimmy
–
=
3.
2
0
jimmy
+
=
4.
2
3
jimmy
+
=
5.
5
2
jimmy
–
=
6.
6
2
jimmy
+
=
7.
8
4
jimmy
–
=
8.
5
3
jimmy
+
=
9.
16
13
jimmy
–
=
10.
8
7
jimmy
–
=
11.
3
1
jimmy
+
=
12.
5
2
jimmy
–
=
13.
9
3
jimmy
+
=
14.
4
3
jimmy
+
=
15.
8
5
jimmy
+
=
16.
16
10
jimmy
–
=
17.
4
2
jimmy
–
=
18.
6
4
jimmy
–
=
19.
15
13
jimmy
–
=
20.
15
13
jimmy
–
=
21.
13
12
jimmy
–
=
22.
6
10
jimmy
+
=
23.
2
5
jimmy
+
=
24.
6
5
jimmy
+
=
Oefen erbijsommen en erafsommen tot 20
| ANTWOORDEN
In de mix
1.
4
3
1
–
=
2.
18
6
12
–
=
3.
2
0
2
+
=
4.
2
3
5
+
=
5.
5
2
3
–
=
6.
6
2
8
+
=
7.
8
4
4
–
=
8.
5
3
8
+
=
9.
16
13
3
–
=
10.
8
7
1
–
=
11.
3
1
4
+
=
12.
5
2
3
–
=
13.
9
3
12
+
=
14.
4
3
7
+
=
15.
8
5
13
+
=
16.
16
10
6
–
=
17.
4
2
2
–
=
18.
6
4
2
–
=
19.
15
13
2
–
=
20.
15
13
2
–
=
21.
13
12
1
–
=
22.
6
10
16
+
=
23.
2
5
7
+
=
24.
6
5
11
+
=