Erafsommen tot 20

Aftrekken

Oefening 1
1.	20	-	20	=
2.	17	-	6	=
3.	9	-	9	=
4.	11	-	9	=
5.	19	-	14	=
6.	4	-	1	=
7.	19	-	6	=
8.	14	-	5	=
9.	16	-	4	=
10.	9	-	6	=

Oefening 2
1.	14	-	13	=
2.	15	-	11	=
3.	20	-	9	=
4.	11	-	6	=
5.	15	-	4	=
6.	20	-	7	=
7.	13	-	12	=
8.	10	-	9	=
9.	19	-	12	=
10.	20	-	17	=

Oefening 3
1.	3	-	2	=
2.	18	-	7	=
3.	16	-	13	=
4.	11	-	10	=
5.	13	-	4	=
6.	16	-	3	=
7.	16	-	9	=
8.	17	-	14	=
9.	20	-	17	=
10.	16	-	14	=

Oefening 4
1.	13	-	6	=
2.	9	-	2	=
3.	11	-	4	=
4.	20	-	5	=
5.	12	-	10	=
6.	15	-	1	=
7.	15	-	8	=
8.	17	-	14	=
9.	7	-	2	=
10.	19	-	13	=

Erafsommen tot 20
| ANTWOORDEN

Aftrekken

Oefening 1
1.	20	-	20	=	0
2.	17	-	6	=	11
3.	9	-	9	=	0
4.	11	-	9	=	2
5.	19	-	14	=	5
6.	4	-	1	=	3
7.	19	-	6	=	13
8.	14	-	5	=	9
9.	16	-	4	=	12
10.	9	-	6	=	3

Oefening 2
1.	14	-	13	=	1
2.	15	-	11	=	4
3.	20	-	9	=	11
4.	11	-	6	=	5
5.	15	-	4	=	11
6.	20	-	7	=	13
7.	13	-	12	=	1
8.	10	-	9	=	1
9.	19	-	12	=	7
10.	20	-	17	=	3

Oefening 3
1.	3	-	2	=	1
2.	18	-	7	=	11
3.	16	-	13	=	3
4.	11	-	10	=	1
5.	13	-	4	=	9
6.	16	-	3	=	13
7.	16	-	9	=	7
8.	17	-	14	=	3
9.	20	-	17	=	3
10.	16	-	14	=	2

Oefening 4
1.	13	-	6	=	7
2.	9	-	2	=	7
3.	11	-	4	=	7
4.	20	-	5	=	15
5.	12	-	10	=	2
6.	15	-	1	=	14
7.	15	-	8	=	7
8.	17	-	14	=	3
9.	7	-	2	=	5
10.	19	-	13	=	6