Jawaban:
pecahan biasa
[tex]1) \frac{5}{8} [/tex]
[tex]2) 2\frac{3}{4} = \frac{11}{4} [/tex]
[tex]3. 0,8 = \frac{8}{10} = \frac{4}{5} [/tex]
[tex]4) \frac{125}{100} = \frac{5}{4} [/tex]
[tex]5)1 \frac{2}{5} = \frac{7}{5} [/tex]
pecahan campuran
1. tidak ada
[tex]2) 2\frac{3}{4} [/tex]
3. tidak ada
[tex]4) \frac{5}{4} = 1 \frac{1}{4} [/tex]
[tex]5)1 \frac{2}{5} [/tex]
decimal
[tex]1) \frac{5}{8} = \frac{5}{8} =0,625 [/tex]
[tex]2) \frac{11}{4} = \frac{11}{4} = 2,75[/tex]
3. 0,8
[tex]4) \frac{125}{100} = \frac{125}{100} = 1,25[/tex]
[tex]5) \frac{7}{5} = \frac{7}{5} = 1,4[/tex]
persen
[tex]1) \frac{5}{8} \times 100\% \\ = \frac{500}{8} \\ = 62,5\%[/tex]
[tex]2) \frac{11}{4} \times 100\% \\ = \frac{1.100}{4} \\ = 275\%[/tex]
[tex]3) \frac{8}{10} \times 100\% \\ = \frac{800}{10} \\ = 80\%[/tex]
4)125%
[tex]5) \frac{7}{5} \times 100\% \\ = \frac{700}{5} \\ = 140\% [/tex]
6. diketahui:
ibu membagikan 75 kotak kue
kepada 10 orang
tiap kotak berisi 4 kue
ditanya jika dibagikan rata maka setiap orang mendapat?
jawab:
caranya:
75 × 4 ÷ 10
= 300 ÷ 10
= 30 kue
jadi setiap orang mendapat 30 buah kue
7. (-27) + (-15) × 15 + 54
= -27 - 15 × 15 + 54
= -27 - 225 + 54
= -27 - 171
= -192
9. 45 + (-9) × 12
= 45 - 9 × 12
= 45 - 108
= -63
10. (-5) × (252 - 188) - 100
= -5 × 64 - 100
= -320 - 100
= -420
