tolong pake caranya ya no 8,9,10,11

8. FPB dari 52, 78 dan 91 = 13 (C)

9. Pecahan paling sederhana dari [tex] \frac{216}{15} [/tex] = [tex] \frac{72}{5} [/tex] = 14 [tex] \frac{2}{5} [/tex] (B)

10. 2 [tex] \frac{2}{5} [/tex] - [tex] \frac{1}{4} [/tex]
= [tex] \frac{12}{5} [/tex] - [tex] \frac{1}{4} [/tex]
= [tex] \frac{8}{20} [/tex]
= [tex] \frac{2}{5} [/tex] m (kok gaada?)

11. Urutan terkecil dari 1 [tex] \frac{21}{50} [/tex] ; [tex] \frac{49}{50} [/tex] ; 1 [tex] \frac{6}{25} [/tex] ; 89% ; 1,05

1 [tex] \frac{21}{50} [/tex] = [tex] \frac{71}{50} [/tex] = [tex] \frac{142}{100} [/tex]
[tex] \frac{49}{50} [/tex] = [tex] \frac{98}{100} [/tex]
1 [tex] \frac{6}{25} [/tex] = [tex] \frac{31}{25} [/tex] = [tex] \frac{124}{100} [/tex]
89% = [tex] \frac{89}{100} [/tex]
1,05 = [tex] \frac{105}{100} [/tex]

Urutan pecahan dari yang terkecil adalah 89% ; [tex] \frac{49}{50} [/tex] ; 1,05 ; 1 [tex] \frac{6}{25} [/tex] ; 1 [tex] \frac{21}{50} [/tex] (D)

8]
52 = 2^2 × 13
78 = 2 × 3 × 13
91 = 7 × 13

FPB = 13 (C)

9]
216/15 = 14 6/15 = 14 2/5 (B)

10]
p bambu = 2 2/5 m
p bambu dicat warna putih = 1/4 bagian

p bambu dicat warna merah
= (1 - 1/4) × 2 2/5
= (4/4 - 1/4) × 12/5
= 3/4 × 12/5
= 36/20
= 1 16/20
= 1 4/5 m (C)

11]
1 21/50 = 1,42
49/50 = 0,98
1 6/25 = 1,24
89% = 0,89
1,05

Urutan bilangan dari yang terkecil :
89% , 49/50 , 1,05 , 1 6/25 , 1 21/50 (D)