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