Matematika Kelas 9 Halaman 55 【NEWEST ✰】

“It’s torn out!” Rina groaned.

From Rina’s memory, the first problem was: ( 2^3 \times 2^5 ). “That’s ( 2^{3+5} = 2^8 = 256 ),” Rina said quickly. “Too easy. The next one must be harder.”

Here’s a story built around an exponents problem: matematika kelas 9 halaman 55

Rina and her best friend, Dani, sat on the floor of the school library, flipping through a worn-out math book. It was Matematika Kelas 9 , and they needed page 55 for their homework.

However, I can create a short based on a typical math problem found at that level. Many Indonesian Grade 9 curricula around page 55 cover exponents (perpangkatan) or roots (bentuk akar) or possibly scientific notation . “It’s torn out

Then they recalled a word problem: Sebuah amoeba membelah diri menjadi dua setiap 20 menit. Jika mula-mula ada 4 amoeba, berapa banyak setelah 2 jam? (“An amoeba splits into two every 20 minutes. Initially there are 4 amoeba, how many after 2 hours?”)

( 4 \times 64 = 256 ) amoeba.

“But each amoeba doubles each time,” Dani added. “Start: ( 4 ) → after 1 split: ( 4 \times 2 = 8 ), after 2 splits: ( 8 \times 2 = 16 ), etc. That’s ( 4 \times 2^6 ).”