Erbijsommen met vlekken tot en met 2.000

Erbijsommen

Oefening 1
1.	489	+		=	970
2.	640	+		=	923
3.	694	+		=	1.129
4.	874	+		=	1.272
5.	943	+		=	1.411
6.	757	+		=	1.506
7.	560	+		=	894
8.	505	+		=	781
9.	698	+		=	1.005
10.	969	+		=	1.477

Oefening 2
1.	530	+		=	903
2.	578	+		=	788
3.	661	+		=	1.015
4.	999	+		=	1.960
5.	932	+		=	1.646
6.	429	+		=	678
7.	341	+		=	611
8.	517	+		=	757
9.	590	+		=	798
10.	892	+		=	1.642

Oefening 3
1.	812	+		=	1.519
2.	933	+		=	1.530
3.	941	+		=	1.877
4.	960	+		=	1.835
5.	789	+		=	1.252
6.	624	+		=	1.021
7.	952	+		=	1.760
8.	936	+		=	1.352
9.	957	+		=	1.236
10.	717	+		=	1.410

Oefening 4
1.	446	+		=	810
2.	530	+		=	902
3.	792	+		=	1.409
4.	642	+		=	920
5.	550	+		=	1.092
6.	872	+		=	1.476
7.	908	+		=	1.724
8.	591	+		=	970
9.	660	+		=	1.226
10.	951	+		=	1.446

Erbijsommen met vlekken tot en met 2.000
| ANTWOORDEN

Erbijsommen

Oefening 1
1.	489	+	481	=	970
2.	640	+	283	=	923
3.	694	+	435	=	1.129
4.	874	+	398	=	1.272
5.	943	+	468	=	1.411
6.	757	+	749	=	1.506
7.	560	+	334	=	894
8.	505	+	276	=	781
9.	698	+	307	=	1.005
10.	969	+	508	=	1.477

Oefening 2
1.	530	+	373	=	903
2.	578	+	210	=	788
3.	661	+	354	=	1.015
4.	999	+	961	=	1.960
5.	932	+	714	=	1.646
6.	429	+	249	=	678
7.	341	+	270	=	611
8.	517	+	240	=	757
9.	590	+	208	=	798
10.	892	+	750	=	1.642

Oefening 3
1.	812	+	707	=	1.519
2.	933	+	597	=	1.530
3.	941	+	936	=	1.877
4.	960	+	875	=	1.835
5.	789	+	463	=	1.252
6.	624	+	397	=	1.021
7.	952	+	808	=	1.760
8.	936	+	416	=	1.352
9.	957	+	279	=	1.236
10.	717	+	693	=	1.410

Oefening 4
1.	446	+	364	=	810
2.	530	+	372	=	902
3.	792	+	617	=	1.409
4.	642	+	278	=	920
5.	550	+	542	=	1.092
6.	872	+	604	=	1.476
7.	908	+	816	=	1.724
8.	591	+	379	=	970
9.	660	+	566	=	1.226
10.	951	+	495	=	1.446