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