Jawab:
a. 540 ÷ 90 + 12 × 15 = 186
b. (-4) × 54 + (-129) - 76 = -421
c. 5/8 ÷ 2/3 × 1/2 + 3/4 = [tex]1\frac{7}{32}[/tex]
d. 5 × 0,32 + 2 3/4 ÷ 1/2 = [tex]7\frac{1}{10}[/tex]
Pembahasan
Menghitung hasil operasi hitung campuran.
Untuk menyelesaikan hitung campuran, kita bisa menggunakan konsep KABATAKU.
a. 540 ÷ 90 + 12 × 15
(540 ÷ 90) + (12 × 15) = 6 + 180
= 186
b. (-4) × 54 + (-129) - 76
((-4) × 54) + (-129) - 76 = -216 - 129 - 76
= -421
c. 5/8 ÷ 2/3 × 1/2 + 3/4
[tex]\begin{aligned} (\frac{5}{8} :\frac{2}{3} \times \frac{1}{2}) +\frac{3}{4} & =(\frac{5}{8} \times \frac{3}{2} \times \frac{1}{2}) +\frac{3}{4}\\ & =\frac{15}{32}+ \frac{3}{4}\\& = \frac{15}{32}+ \frac{24}{32}\\ & = \frac{39}{32} \\ & = 1\frac{7}{32} \end{aligned}[/tex]
d. 5 × 0,32 + 2 3/4 ÷ 1/2
[tex]\begin{aligned} (5 \times 0,32) + (2\frac{3}{4} : \frac{1}{2}) & = (5 \times \frac{32}{100}) + (\frac{11}{4} : \frac{1}{2})\\ & = \frac{32}{20} + (\frac{11}{4} \times \frac{2}{1})\\& = \frac{32}{20} + \frac{11}{2} \\ & = \frac{32}{20} + \frac{110}{20} \\ & = \frac{142}{20} \\ & = 7\frac{2}{20} \\ & = 7\frac{1}{10} \end{aligned}[/tex]
Pelajari lebih lanjut tentang Bilangan brainly.co.id/tugas/339434
Detail Jawaban
- Kelas : 7 SMP
- Mapel : Matematika
- Materi : Bab 1 - Bilangan
- Kode : 7.2.1
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