

Tugas 2 Pelatihan Quiziiz dari Bu Zenita ( Imam Gozali )
Presentation
•
Mathematics
•
9th Grade
•
Medium
Imam Gozali
Used 2+ times
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8 Slides • 4 Questions
1
Tugas 2 -Pelatihan Quiziiz dari Bu Zenita
by Imam Gozali
2
Bilangan berpangkat
3
Pengertian bilangan berpangkat
an = a x a x a x a x ... (sebanyak n)
a disebut sebagai basis/bilangan pokok
n disebut sebagai eksponen/pangkat
4
Contoh
24 = 2 x 2 x 2 x 2
35 = 3 x 3 x 3 x 3 x 3
73 = .... (bisa kan?)
107 = .... (gampang bro)
5
Bagaimana kalau yang ini?
(-5)2 = (-5) x (-5)
= 25 --> positif
(-5)3 = (-5) x (-5) x (-5)
= - 125 --> negatif
(-5)4 = (-5) x (-5) x (-5) x (-5)
= 625 --> positif
-54 = - (5 x 5 x 5 x 5)
= - 625 --> negatif
Apa yang dapat kamu simpulkan dari contoh contoh di atas?
6
Multiple Choice
Bentuk 5m3 memiliki basis ....
5
m
5m
3
7
Fill in the Blanks
Type answer...
8
Sifat-sifat operasi bilangan berpangkat
1. am x an = am+n
Contoh : 53 x 54 = 53+4 = 57
2. (am)n = amxn
Contoh : (72)5 = 72x5 = 710
3. am : an = am-n
Contoh : 57 : 53 = 57-3 = 54
9
Dari sifat di atas, coba perhatikan hal berikut :
43 : 43 = 1 (Bilangan yang dibagi oleh bilangan itu sendiri hasilnya 1)
Padahal menurut sifat di atas berlaku
43 : 43 = 43-3
= 40 (berarti 40 = 1)
Dengan cara yang sama, didapatkan 50 = 1 , 70 = 1 , 100 = 1 , (-3)0 = 1
Kesimpulannya :
a0 = ....
10
Sifat sifat pembagian bilangan berpangkat
11
Multiple Select
Hasil dari 93 x 92 : 97 adalah ...
9-2
921
3-4
92
12
Multiple Select
Hasil dari 43 : 27 x 2 adalah...
1
20
0
2
Tugas 2 -Pelatihan Quiziiz dari Bu Zenita
by Imam Gozali
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