Erbijsommen met vlekken tot en met 1.000

Erbijsommen

Oefening 1
1.	490	+		=	835
2.	447	+		=	890
3.	489	+		=	738
4.	472	+		=	606
5.	426	+		=	821
6.	407	+		=	712
7.	189	+		=	296
8.	483	+		=	766
9.	221	+		=	363
10.	468	+		=	637

Oefening 2
1.	359	+		=	674
2.	467	+		=	775
3.	405	+		=	561
4.	153	+		=	292
5.	429	+		=	758
6.	438	+		=	830
7.	371	+		=	476
8.	481	+		=	678
9.	203	+		=	342
10.	365	+		=	608

Oefening 3
1.	343	+		=	547
2.	475	+		=	687
3.	434	+		=	546
4.	428	+		=	613
5.	454	+		=	836
6.	462	+		=	900
7.	408	+		=	540
8.	246	+		=	450
9.	171	+		=	299
10.	305	+		=	581

Oefening 4
1.	300	+		=	447
2.	242	+		=	378
3.	337	+		=	556
4.	478	+		=	914
5.	427	+		=	823
6.	239	+		=	453
7.	411	+		=	607
8.	441	+		=	861
9.	362	+		=	597
10.	382	+		=	555

Erbijsommen met vlekken tot en met 1.000
| ANTWOORDEN

Erbijsommen

Oefening 1
1.	490	+	345	=	835
2.	447	+	443	=	890
3.	489	+	249	=	738
4.	472	+	134	=	606
5.	426	+	395	=	821
6.	407	+	305	=	712
7.	189	+	107	=	296
8.	483	+	283	=	766
9.	221	+	142	=	363
10.	468	+	169	=	637

Oefening 2
1.	359	+	315	=	674
2.	467	+	308	=	775
3.	405	+	156	=	561
4.	153	+	139	=	292
5.	429	+	329	=	758
6.	438	+	392	=	830
7.	371	+	105	=	476
8.	481	+	197	=	678
9.	203	+	139	=	342
10.	365	+	243	=	608

Oefening 3
1.	343	+	204	=	547
2.	475	+	212	=	687
3.	434	+	112	=	546
4.	428	+	185	=	613
5.	454	+	382	=	836
6.	462	+	438	=	900
7.	408	+	132	=	540
8.	246	+	204	=	450
9.	171	+	128	=	299
10.	305	+	276	=	581

Oefening 4
1.	300	+	147	=	447
2.	242	+	136	=	378
3.	337	+	219	=	556
4.	478	+	436	=	914
5.	427	+	396	=	823
6.	239	+	214	=	453
7.	411	+	196	=	607
8.	441	+	420	=	861
9.	362	+	235	=	597
10.	382	+	173	=	555