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