Erafsommen tot 20

Aftrekken

Oefening 1
1.	17	-	16	=
2.	18	-	16	=
3.	3	-	2	=
4.	18	-	14	=
5.	17	-	6	=
6.	14	-	7	=
7.	15	-	2	=
8.	17	-	5	=
9.	10	-	1	=
10.	14	-	6	=

Oefening 2
1.	11	-	5	=
2.	14	-	6	=
3.	4	-	1	=
4.	20	-	7	=
5.	12	-	2	=
6.	8	-	3	=
7.	18	-	5	=
8.	15	-	5	=
9.	13	-	6	=
10.	17	-	11	=

Oefening 3
1.	10	-	9	=
2.	20	-	9	=
3.	2	-	1	=
4.	15	-	11	=
5.	15	-	9	=
6.	10	-	7	=
7.	17	-	14	=
8.	18	-	12	=
9.	3	-	2	=
10.	10	-	2	=

Oefening 4
1.	18	-	3	=
2.	17	-	9	=
3.	3	-	2	=
4.	19	-	15	=
5.	16	-	6	=
6.	6	-	3	=
7.	19	-	8	=
8.	11	-	8	=
9.	14	-	7	=
10.	15	-	14	=

Erafsommen tot 20
| ANTWOORDEN

Aftrekken

Oefening 1
1.	17	-	16	=	1
2.	18	-	16	=	2
3.	3	-	2	=	1
4.	18	-	14	=	4
5.	17	-	6	=	11
6.	14	-	7	=	7
7.	15	-	2	=	13
8.	17	-	5	=	12
9.	10	-	1	=	9
10.	14	-	6	=	8

Oefening 2
1.	11	-	5	=	6
2.	14	-	6	=	8
3.	4	-	1	=	3
4.	20	-	7	=	13
5.	12	-	2	=	10
6.	8	-	3	=	5
7.	18	-	5	=	13
8.	15	-	5	=	10
9.	13	-	6	=	7
10.	17	-	11	=	6

Oefening 3
1.	10	-	9	=	1
2.	20	-	9	=	11
3.	2	-	1	=	1
4.	15	-	11	=	4
5.	15	-	9	=	6
6.	10	-	7	=	3
7.	17	-	14	=	3
8.	18	-	12	=	6
9.	3	-	2	=	1
10.	10	-	2	=	8

Oefening 4
1.	18	-	3	=	15
2.	17	-	9	=	8
3.	3	-	2	=	1
4.	19	-	15	=	4
5.	16	-	6	=	10
6.	6	-	3	=	3
7.	19	-	8	=	11
8.	11	-	8	=	3
9.	14	-	7	=	7
10.	15	-	14	=	1