Erbijsommen met vlekken tot en met 1.000

Erbijsommen

Oefening 1
1.	370	+		=	527
2.	349	+		=	479
3.	142	+		=	251
4.	265	+		=	407
5.	434	+		=	689
6.	425	+		=	752
7.	297	+		=	564
8.	495	+		=	965
9.	266	+		=	521
10.	399	+		=	641

Oefening 2
1.	483	+		=	887
2.	475	+		=	756
3.	283	+		=	540
4.	239	+		=	454
5.	464	+		=	654
6.	320	+		=	546
7.	472	+		=	735
8.	450	+		=	828
9.	403	+		=	584
10.	488	+		=	686

Oefening 3
1.	382	+		=	685
2.	348	+		=	492
3.	468	+		=	598
4.	331	+		=	478
5.	462	+		=	723
6.	248	+		=	404
7.	389	+		=	596
8.	343	+		=	564
9.	475	+		=	645
10.	263	+		=	490

Oefening 4
1.	225	+		=	444
2.	495	+		=	951
3.	308	+		=	500
4.	456	+		=	728
5.	380	+		=	605
6.	390	+		=	759
7.	432	+		=	688
8.	320	+		=	577
9.	319	+		=	608
10.	461	+		=	630

Erbijsommen met vlekken tot en met 1.000
| ANTWOORDEN

Erbijsommen

Oefening 1
1.	370	+	157	=	527
2.	349	+	130	=	479
3.	142	+	109	=	251
4.	265	+	142	=	407
5.	434	+	255	=	689
6.	425	+	327	=	752
7.	297	+	267	=	564
8.	495	+	470	=	965
9.	266	+	255	=	521
10.	399	+	242	=	641

Oefening 2
1.	483	+	404	=	887
2.	475	+	281	=	756
3.	283	+	257	=	540
4.	239	+	215	=	454
5.	464	+	190	=	654
6.	320	+	226	=	546
7.	472	+	263	=	735
8.	450	+	378	=	828
9.	403	+	181	=	584
10.	488	+	198	=	686

Oefening 3
1.	382	+	303	=	685
2.	348	+	144	=	492
3.	468	+	130	=	598
4.	331	+	147	=	478
5.	462	+	261	=	723
6.	248	+	156	=	404
7.	389	+	207	=	596
8.	343	+	221	=	564
9.	475	+	170	=	645
10.	263	+	227	=	490

Oefening 4
1.	225	+	219	=	444
2.	495	+	456	=	951
3.	308	+	192	=	500
4.	456	+	272	=	728
5.	380	+	225	=	605
6.	390	+	369	=	759
7.	432	+	256	=	688
8.	320	+	257	=	577
9.	319	+	289	=	608
10.	461	+	169	=	630