Erbijsommen met vlekken tot en met 30

Erbijsommen

Oefening 1
1.	15	+		=	18
2.	11	+		=	13
3.	13	+		=	14
4.	11	+		=	16
5.	13	+		=	16
6.	8	+		=	10
7.	14	+		=	18
8.	13	+		=	19
9.	5	+		=	9
10.	15	+		=	19

Oefening 2
1.	4	+		=	7
2.	15	+		=	18
3.	15	+		=	18
4.	6	+		=	10
5.	5	+		=	8
6.	14	+		=	24
7.	15	+		=	19
8.	15	+		=	21
9.	8	+		=	11
10.	12	+		=	22

Oefening 3
1.	10	+		=	19
2.	7	+		=	12
3.	10	+		=	15
4.	11	+		=	18
5.	14	+		=	21
6.	15	+		=	20
7.	10	+		=	18
8.	11	+		=	18
9.	9	+		=	10
10.	12	+		=	18

Oefening 4
1.	15	+		=	16
2.	8	+		=	15
3.	4	+		=	7
4.	14	+		=	25
5.	11	+		=	20
6.	15	+		=	29
7.	14	+		=	15
8.	7	+		=	12
9.	13	+		=	18
10.	11	+		=	13

Erbijsommen met vlekken tot en met 30
| ANTWOORDEN

Erbijsommen

Oefening 1
1.	15	+	3	=	18
2.	11	+	2	=	13
3.	13	+	1	=	14
4.	11	+	5	=	16
5.	13	+	3	=	16
6.	8	+	2	=	10
7.	14	+	4	=	18
8.	13	+	6	=	19
9.	5	+	4	=	9
10.	15	+	4	=	19

Oefening 2
1.	4	+	3	=	7
2.	15	+	3	=	18
3.	15	+	3	=	18
4.	6	+	4	=	10
5.	5	+	3	=	8
6.	14	+	10	=	24
7.	15	+	4	=	19
8.	15	+	6	=	21
9.	8	+	3	=	11
10.	12	+	10	=	22

Oefening 3
1.	10	+	9	=	19
2.	7	+	5	=	12
3.	10	+	5	=	15
4.	11	+	7	=	18
5.	14	+	7	=	21
6.	15	+	5	=	20
7.	10	+	8	=	18
8.	11	+	7	=	18
9.	9	+	1	=	10
10.	12	+	6	=	18

Oefening 4
1.	15	+	1	=	16
2.	8	+	7	=	15
3.	4	+	3	=	7
4.	14	+	11	=	25
5.	11	+	9	=	20
6.	15	+	14	=	29
7.	14	+	1	=	15
8.	7	+	5	=	12
9.	13	+	5	=	18
10.	11	+	2	=	13