Welk getal ontbreekt t/m 30?

Aftrekken

Oefening 1
1.	19	-		=	10
2.	30	-		=	21
3.	7	-		=	4
4.	25	-		=	2
5.	15	-		=	9
6.	21	-		=	2
7.	23	-		=	20
8.	28	-		=	0
9.	16	-		=	15
10.	24	-		=	8

Oefening 2
1.	28	-		=	21
2.	22	-		=	2
3.	15	-		=	10
4.	27	-		=	8
5.	25	-		=	6
6.	23	-		=	6
7.	28	-		=	13
8.	23	-		=	14
9.	28	-		=	9
10.	5	-		=	1

Oefening 3
1.	21	-		=	11
2.	18	-		=	6
3.	11	-		=	8
4.	27	-		=	19
5.	29	-		=	11
6.	29	-		=	24
7.	6	-		=	5
8.	29	-		=	6
9.	14	-		=	7
10.	19	-		=	7

Oefening 4
1.	27	-		=	23
2.	27	-		=	6
3.	16	-		=	15
4.	21	-		=	9
5.	14	-		=	3
6.	28	-		=	25
7.	11	-		=	2
8.	29	-		=	25
9.	8	-		=	1
10.	19	-		=	0

Welk getal ontbreekt t/m 30?
| ANTWOORDEN

Aftrekken

Oefening 1
1.	19	-	9	=	10
2.	30	-	9	=	21
3.	7	-	3	=	4
4.	25	-	23	=	2
5.	15	-	6	=	9
6.	21	-	19	=	2
7.	23	-	3	=	20
8.	28	-	28	=	0
9.	16	-	1	=	15
10.	24	-	16	=	8

Oefening 2
1.	28	-	7	=	21
2.	22	-	20	=	2
3.	15	-	5	=	10
4.	27	-	19	=	8
5.	25	-	19	=	6
6.	23	-	17	=	6
7.	28	-	15	=	13
8.	23	-	9	=	14
9.	28	-	19	=	9
10.	5	-	4	=	1

Oefening 3
1.	21	-	10	=	11
2.	18	-	12	=	6
3.	11	-	3	=	8
4.	27	-	8	=	19
5.	29	-	18	=	11
6.	29	-	5	=	24
7.	6	-	1	=	5
8.	29	-	23	=	6
9.	14	-	7	=	7
10.	19	-	12	=	7

Oefening 4
1.	27	-	4	=	23
2.	27	-	21	=	6
3.	16	-	1	=	15
4.	21	-	12	=	9
5.	14	-	11	=	3
6.	28	-	3	=	25
7.	11	-	9	=	2
8.	29	-	4	=	25
9.	8	-	7	=	1
10.	19	-	19	=	0