
Bilangan Berpangkat
Presentation
•
Mathematics
•
10th Grade
•
Hard
Syahruddin Syahruddin
Used 3+ times
FREE Resource
6 Slides • 10 Questions
1
By Syahruddin, S.Pd
2
Perpangkatan adalah perkalian berulang sebuah bilangan dengan bilangan itu sendiri
Perpangkatan dirumuskan dengan :
an = a x a x a x .... x a
(a dikalikan sebanyak n faktor)
Contoh :
72 dibaca tujuh pangkat dua sama artinya dengan 7 x 7
1. Pengertian perpangkatan
3
Contoh :
22 = 2 x 2 25 = 2 x 2 x 2 x 2 x 2
23 = 2 x 2 x 2 26 = 2 x 2 x 2 x 2 x 2 x 2
24 = 2 x 2 x 2 x 2 27 = 2 x 2 x 2 x 2 x 2 x 2 x 2
terbukti bahwa :
an = a x a x a x .... x a
(a dikalikan sebanyak n faktor)
2. Bilangan Bulat Pangkat Bilangan Bulat Positif
4
Contoh :
24 = 2 x 2 x 2 x 2= 16
23 = 2 x 2 x 2 = 8
22 = 2 x 2 =4
21 = 2
20 = 1
Secara umum dapat di rumuskan :
a0 = 1
4. Bilangan Bulat Pangkat Bilangan Nol
5
Contoh :
22 = 2 x 2 = 4 2-2 = 1/22= 1/4
23 = 2 x 2 x 2 = 8 2-3 = 1/23= 1/8
24 = 2 x 2 x 2 x 2 = 16 2-4 = 1/24= 1/16
Berdasarkan contoh diatas, kita dapat mengubah bilangan berpangkat negatif ke bilangan berpangkat positif dengan rumus :
a-n = 1/an
3. Bilangan Bulat Pangkat Bilangan Bulat Negatif
6
7
Multiple Choice
Arti bilangan berpangkat 36 adalah ……..
3 x 3 x 3 x 3 x 3 x 3
3 x 6
3 + 3 + 3 + 3 + 3 + 3
6
8
Multiple Choice
p5 = ..............
p + p + p + p + p
p x 5
5
p x p x p x p x p
9
Multiple Choice
(−2)5 = ........................
-10
-32
10
32
10
Multiple Choice
410:42:43
Bentuk sederhana dari bilangan berpangkat tersebut adalah......
42
47
45
415
11
Multiple Choice
Bentuk sederhana dari a4 x a3 = .........
a7
a12
a
a2
12
Multiple Choice
(3a5)2
Bentuk bilangan berpangkat tersebut sama dengan ...............
6a10
6a5
9a10
9a5
13
Multiple Choice
a3a7 × a2
a2
a9
a4
a6
14
Multiple Choice
(54)2
Hasil dari bilangan berpangkat tersebut adalah ..............
54
108
58
2516
15
Multiple Choice
(3ab)3
Bentuk sederhana dari bilangan berpangkat tersebut adalah .................
9ab3
27a3b3
9a3b3
27ab3
16
Multiple Choice
(22)2
Hasil dari bilangan berpangkat tersebut adalah ..............
8
16
24
32
By Syahruddin, S.Pd
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