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Samenvatting Uitleg verschillende talstelsels, kansberekening, deelbaarheid en figuurlijke getallen.

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Een uitleg van verschillende figuurlijke getallen: vierkantgetallen, driehoeksgetallen, rechthoekgetallen. Uitleg over verschillende talstelsels en hoe je daarmee rekent: land van okt en het binair stelsel. Uitleg over de deelbaarheid, GGD, KGV, priemgetal, perfect getal en kansberekening

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Uploaded on
January 23, 2021
Number of pages
9
Written in
2019/2020
Type
Summary

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Figuurlijke getallen:
Vierkantgetallen:
Je kan met ‘steentjes’ een vierkant leggen. x²




1 x 1, 2x2, 3x3, enz. Wat is het vierkantgetal na 25? √25 = 5. 6 x 6 = 36.


Driehoeksgetallen:
Getallen waarmee je een driehoek kan maken.




Onderste rij bijleggen Onderste rij bijleggen
+3 +4
3, 6, 10, 15, 21
Formule: Driehoeksgetal (N) N x (N + 1)

2


Twintigste driehoeksgetal. 20 x (20 + 1) 20 x 21
=
2 2
20 x 21 = 420. 420 : 2 = 210.
Het 20ste driehoeksgetal is 210
Rang uitrekenen R= N x (N+1) x 2.

2

Rechthoekgetallen:
Een vierkantgetal met een extra rij x² + x


+x (3 x 3) + 3= 3² + 3 = 9 + 3 = 12

, Talstelsels:
Land van Okt
Getallen gaan tot 8;
1, 2, 3, 4, 5, 6, 7, Okt
1 Okt 1, 1 Okt 2, 1 Okt, 3, 1 Okt 4, 1 Okt 5, 1 Okt 6, 1 Okt 7, 2 Okt
7 Okt 7, 1 drob, 1 drob 1

10 = okt 7, okt
100 = drob 7 okt 7, drob
1000 = kolb 7 drob 7 okt 7, kolb
10.000 = plov 7 kolb 7 drob 7 okt 7, plov
Drie okt twee = 32
Twee drob zeven = 207
Vier plov 3 kolb twee drob 1 = 43201

Getallen schrijven:

D O E
8² 81 80
64 8 1

Van ons stelsel <10> naar Okt <8>
35: 82 81 80 35 <10> is dus 35 <8> (3 Okt 5)
64 8 1
0 3 5


Van Okt <8> naar ons stelsel <10>
234: 82 81 80 128 + 24 + 2 = 156. 234 <8> is dus 156 <10>
64 8 1
2 3 4

128 24 2
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