Welk getal ontbreekt t/m 2.000?

Optellen

Oefening 1
1.	660	+		=	1.151
2.	670	+		=	1.223
3.	569	+		=	823
4.	318	+		=	545
5.	808	+		=	1.032
6.	960	+		=	1.515
7.	701	+		=	1.197
8.	742	+		=	1.401
9.	399	+		=	653
10.	720	+		=	1.280

Oefening 2
1.	978	+		=	1.575
2.	943	+		=	1.512
3.	812	+		=	1.054
4.	720	+		=	996
5.	671	+		=	1.262
6.	884	+		=	1.623
7.	984	+		=	1.556
8.	712	+		=	1.299
9.	901	+		=	1.300
10.	480	+		=	786

Oefening 3
1.	723	+		=	1.230
2.	999	+		=	1.216
3.	543	+		=	799
4.	497	+		=	919
5.	584	+		=	949
6.	519	+		=	779
7.	610	+		=	1.175
8.	801	+		=	1.557
9.	905	+		=	1.637
10.	840	+		=	1.568

Oefening 4
1.	918	+		=	1.734
2.	269	+		=	481
3.	490	+		=	860
4.	652	+		=	1.034
5.	522	+		=	759
6.	405	+		=	672
7.	636	+		=	1.022
8.	333	+		=	604
9.	894	+		=	1.489
10.	715	+		=	1.361

Welk getal ontbreekt t/m 2.000?
| ANTWOORDEN

Optellen

Oefening 1
1.	660	+	491	=	1.151
2.	670	+	553	=	1.223
3.	569	+	254	=	823
4.	318	+	227	=	545
5.	808	+	224	=	1.032
6.	960	+	555	=	1.515
7.	701	+	496	=	1.197
8.	742	+	659	=	1.401
9.	399	+	254	=	653
10.	720	+	560	=	1.280

Oefening 2
1.	978	+	597	=	1.575
2.	943	+	569	=	1.512
3.	812	+	242	=	1.054
4.	720	+	276	=	996
5.	671	+	591	=	1.262
6.	884	+	739	=	1.623
7.	984	+	572	=	1.556
8.	712	+	587	=	1.299
9.	901	+	399	=	1.300
10.	480	+	306	=	786

Oefening 3
1.	723	+	507	=	1.230
2.	999	+	217	=	1.216
3.	543	+	256	=	799
4.	497	+	422	=	919
5.	584	+	365	=	949
6.	519	+	260	=	779
7.	610	+	565	=	1.175
8.	801	+	756	=	1.557
9.	905	+	732	=	1.637
10.	840	+	728	=	1.568

Oefening 4
1.	918	+	816	=	1.734
2.	269	+	212	=	481
3.	490	+	370	=	860
4.	652	+	382	=	1.034
5.	522	+	237	=	759
6.	405	+	267	=	672
7.	636	+	386	=	1.022
8.	333	+	271	=	604
9.	894	+	595	=	1.489
10.	715	+	646	=	1.361