Welk getal ontbreekt t/m 20?

Aftrekken

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

Oefening 2
1.	13	-		=	11
2.	12	-		=	3
3.	4	-		=	3
4.	16	-		=	5
5.	20	-		=	4
6.	17	-		=	15
7.	17	-		=	9
8.	16	-		=	15
9.	13	-		=	3
10.	19	-		=	13

Oefening 3
1.	20	-		=	9
2.	20	-		=	11
3.	4	-		=	0
4.	12	-		=	7
5.	15	-		=	1
6.	14	-		=	12
7.	6	-		=	3
8.	17	-		=	16
9.	8	-		=	5
10.	18	-		=	9

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

Welk getal ontbreekt t/m 20?
| ANTWOORDEN

Aftrekken

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

Oefening 2
1.	13	-	2	=	11
2.	12	-	9	=	3
3.	4	-	1	=	3
4.	16	-	11	=	5
5.	20	-	16	=	4
6.	17	-	2	=	15
7.	17	-	8	=	9
8.	16	-	1	=	15
9.	13	-	10	=	3
10.	19	-	6	=	13

Oefening 3
1.	20	-	11	=	9
2.	20	-	9	=	11
3.	4	-	4	=	0
4.	12	-	5	=	7
5.	15	-	14	=	1
6.	14	-	2	=	12
7.	6	-	3	=	3
8.	17	-	1	=	16
9.	8	-	3	=	5
10.	18	-	9	=	9

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