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