

MATERI BILANGAN RASIONAL.pdf
Presentation
•
Other
•
KG - Professional Development
•
Hard
Meylinda Zainudin
FREE Resource
6 Slides • 0 Questions
1
BILANGAN RASIONAL
By : Meylinda Rozana Zainudin
2
A. Pengertian
Bilangan Rasional adalah bilangan yang dapat diubah menjadi pecahan biasa
(a/b) dan apabila ini diubah ke pecahan decimal, maka angkanya akan berhenti
di suatu bilangan tertentu. Apabila tidak berhenti, maka akan membentuk pola
pengulangan.
Contoh:
½ = 0,5
1/3 = 0,3333…
3
Defenisi Pecahan
Pecahan adalah suatu lambang yang memuat pasangan berurutan bilangan-
bilangan bulat p dan q, ditulis untuk menyatakan nilai x yang memenuhi
hubungan p/q = x.
4
Operasi Penjumlahan dan Pengurangan
Bilangan Rasional
Tentukan Hasil Operasi Hitung Bilangan Rasional berikut:
1.
6/7 – 3/7 = 3/7
2.
2 – ½ = 3/2
3.
2/3 + 3/2 = 13/6
5
Operasi Perkalian Dan Pembagian
Bilangan Rasional
Tentukan Hasil Operasi Hitung Bilangan Rasional berikut:
1.
6 x 1/12 = 1/2
2.
5/2 x 2/3 = 10/6
3.
½ : 2 = 1
6
Latihan Soal
Pada tes penerimaan siswa baru MTs Negeri 3 Lembata, Calon siswa diminta
untuk mengerjakan 30 soal. Setiap jawaban benar mendapat poin 5, jawaban
salah mendapat nilai -1, serta tidak menjawab mendapat poin 0. Jika Ahmad
hanya menjawab 20 soal dengan benar dari total 25 soal yang dikerjakannya,
berapa total nilai yang diperoleh Ahmad ?
BILANGAN RASIONAL
By : Meylinda Rozana Zainudin
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