Welk getal ontbreekt t/m 20?

Optellen

Oefening 1
1.	6	+		=	9
2.	10	+		=	15
3.	6	+		=	12
4.	9	+		=	13
5.	7	+		=	8
6.	6	+		=	8
7.	8	+		=	15
8.	10	+		=	13
9.	6	+		=	7
10.	2	+		=	3

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

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

Oefening 4
1.	4	+		=	7
2.	7	+		=	10
3.	8	+		=	14
4.	10	+		=	14
5.	7	+		=	10
6.	9	+		=	12
7.	8	+		=	14
8.	9	+		=	17
9.	5	+		=	9
10.	7	+		=	9

Welk getal ontbreekt t/m 20?
| ANTWOORDEN

Optellen

Oefening 1
1.	6	+	3	=	9
2.	10	+	5	=	15
3.	6	+	6	=	12
4.	9	+	4	=	13
5.	7	+	1	=	8
6.	6	+	2	=	8
7.	8	+	7	=	15
8.	10	+	3	=	13
9.	6	+	1	=	7
10.	2	+	1	=	3

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

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

Oefening 4
1.	4	+	3	=	7
2.	7	+	3	=	10
3.	8	+	6	=	14
4.	10	+	4	=	14
5.	7	+	3	=	10
6.	9	+	3	=	12
7.	8	+	6	=	14
8.	9	+	8	=	17
9.	5	+	4	=	9
10.	7	+	2	=	9