Kunci Jawaban
Kunci Jawaban Matematika Kelas 7 Halaman 86 87: Cara Menentukan Bentuk Bilangan Berpangkat
Kunci jawaban Matematika Kelas 7 halaman 86 87 cara tentukan bentuk bilangan berpangkat pada soal Ayo Kita Berlatih 1.7 dapat menjadi bahan koreksi.
lihat foto
Soal Uraian
Soal nomor 1
a. 108
= 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10
= 100.000.000
b. 58 =
= 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5
= 390.625
c. -106 =
= − (10 × 10 × 10 × 10 × 10 × 10)
= −1.000.000
d. 24 × 107 =
= 2 × 2 × 2 × 2 × 10 × 10 × 10 × 10 × 10 × 10 × 10
= 16 × 10.000.000
= 160.000.000
e. (-2)4 × (-3)5
= −2 × −2 × −2 × −2 × −3 × −3 × −3 × −3 × −3
= 16 × −243
= −3.888
Soal nomor 2
a. 9.000.000 =
= 9 × 1.000.000
= 3 × 3 × 10 × 10 × 10 × 10 × 10 × 10
= 32 × 106
b. 46656 =
= 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 3
= 2⁶ x 3⁶
= (2 x 3)⁶
= 6⁶
c. -1.500.000 =
= -(1.500.000)
= - ( 15 x 100.000)
= -( 15 x (10⁵))
= -15 x (10⁵)
= -1,5 x 10⁶
d. 30.375 =
= 3 x 3 x 3 x 3 x 3 x 5 x 5 x 5
= 3⁵ x 5³
e. -2.109.375
= -(2.109.3753)
= -(3 x 3 x 3 x 5 x 5 x 5 x 5 x 5 x 5 x 5)
= (-3)³ x 5⁷
= 3³ x (-5)⁷
Soal nomor 3
a. 53 < 122
