Welk getal ontbreekt t/m 40?

Optellen

Oefening 1
1.	19	+		=	36
2.	3	+		=	4
3.	11	+		=	12
4.	17	+		=	18
5.	19	+		=	32
6.	13	+		=	16
7.	10	+		=	17
8.	16	+		=	26
9.	11	+		=	19
10.	20	+		=	23

Oefening 2
1.	20	+		=	32
2.	17	+		=	33
3.	18	+		=	34
4.	7	+		=	9
5.	17	+		=	26
6.	7	+		=	9
7.	20	+		=	38
8.	13	+		=	24
9.	18	+		=	30
10.	8	+		=	11

Oefening 3
1.	14	+		=	28
2.	19	+		=	26
3.	14	+		=	19
4.	19	+		=	20
5.	20	+		=	40
6.	10	+		=	11
7.	17	+		=	21
8.	10	+		=	13
9.	20	+		=	32
10.	13	+		=	20

Oefening 4
1.	16	+		=	29
2.	15	+		=	18
3.	10	+		=	15
4.	20	+		=	32
5.	18	+		=	20
6.	16	+		=	26
7.	7	+		=	8
8.	11	+		=	19
9.	17	+		=	30
10.	18	+		=	20

Welk getal ontbreekt t/m 40?
| ANTWOORDEN

Optellen

Oefening 1
1.	19	+	17	=	36
2.	3	+	1	=	4
3.	11	+	1	=	12
4.	17	+	1	=	18
5.	19	+	13	=	32
6.	13	+	3	=	16
7.	10	+	7	=	17
8.	16	+	10	=	26
9.	11	+	8	=	19
10.	20	+	3	=	23

Oefening 2
1.	20	+	12	=	32
2.	17	+	16	=	33
3.	18	+	16	=	34
4.	7	+	2	=	9
5.	17	+	9	=	26
6.	7	+	2	=	9
7.	20	+	18	=	38
8.	13	+	11	=	24
9.	18	+	12	=	30
10.	8	+	3	=	11

Oefening 3
1.	14	+	14	=	28
2.	19	+	7	=	26
3.	14	+	5	=	19
4.	19	+	1	=	20
5.	20	+	20	=	40
6.	10	+	1	=	11
7.	17	+	4	=	21
8.	10	+	3	=	13
9.	20	+	12	=	32
10.	13	+	7	=	20

Oefening 4
1.	16	+	13	=	29
2.	15	+	3	=	18
3.	10	+	5	=	15
4.	20	+	12	=	32
5.	18	+	2	=	20
6.	16	+	10	=	26
7.	7	+	1	=	8
8.	11	+	8	=	19
9.	17	+	13	=	30
10.	18	+	2	=	20