Erbijsommen met vlekken tot en met 1.000

Erbijsommen

Oefening 1
1.	331	+		=	620
2.	470	+		=	909
3.	280	+		=	524
4.	386	+		=	691
5.	315	+		=	462
6.	130	+		=	248
7.	341	+		=	506
8.	251	+		=	472
9.	319	+		=	449
10.	434	+		=	547

Oefening 2
1.	410	+		=	554
2.	257	+		=	461
3.	470	+		=	570
4.	493	+		=	595
5.	481	+		=	938
6.	349	+		=	544
7.	365	+		=	710
8.	347	+		=	516
9.	393	+		=	746
10.	325	+		=	566

Oefening 3
1.	291	+		=	487
2.	436	+		=	819
3.	486	+		=	861
4.	443	+		=	602
5.	416	+		=	567
6.	198	+		=	396
7.	275	+		=	520
8.	284	+		=	470
9.	421	+		=	521
10.	361	+		=	637

Oefening 4
1.	472	+		=	644
2.	279	+		=	514
3.	350	+		=	684
4.	466	+		=	602
5.	387	+		=	678
6.	468	+		=	899
7.	470	+		=	884
8.	225	+		=	410
9.	168	+		=	311
10.	317	+		=	488

Erbijsommen met vlekken tot en met 1.000
| ANTWOORDEN

Erbijsommen

Oefening 1
1.	331	+	289	=	620
2.	470	+	439	=	909
3.	280	+	244	=	524
4.	386	+	305	=	691
5.	315	+	147	=	462
6.	130	+	118	=	248
7.	341	+	165	=	506
8.	251	+	221	=	472
9.	319	+	130	=	449
10.	434	+	113	=	547

Oefening 2
1.	410	+	144	=	554
2.	257	+	204	=	461
3.	470	+	100	=	570
4.	493	+	102	=	595
5.	481	+	457	=	938
6.	349	+	195	=	544
7.	365	+	345	=	710
8.	347	+	169	=	516
9.	393	+	353	=	746
10.	325	+	241	=	566

Oefening 3
1.	291	+	196	=	487
2.	436	+	383	=	819
3.	486	+	375	=	861
4.	443	+	159	=	602
5.	416	+	151	=	567
6.	198	+	198	=	396
7.	275	+	245	=	520
8.	284	+	186	=	470
9.	421	+	100	=	521
10.	361	+	276	=	637

Oefening 4
1.	472	+	172	=	644
2.	279	+	235	=	514
3.	350	+	334	=	684
4.	466	+	136	=	602
5.	387	+	291	=	678
6.	468	+	431	=	899
7.	470	+	414	=	884
8.	225	+	185	=	410
9.	168	+	143	=	311
10.	317	+	171	=	488