

Matematika kelas 5
Presentation
•
Mathematics
•
5th Grade
•
Medium
Amrul .O Yova
Used 20+ times
FREE Resource
3 Slides • 6 Questions
1
Matematika kelas 5
Perkalian pecahan

2
Perkalian
contoh perkalian pecahan
1) 2/5 x 1/3 =..............
2/5 x 1/3 = 2x1/5x3 = 2/15
2) 3% x 0,5 =...............
Karena perkalian kita ubah terlebih dahulu persen dan desimalnya menjadi pecahan biasa.
3% x 0,5 = 3/100 x 5/10 = 15/1000
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Lanjutan
4) 2 1/2 x 3/4 =Kita ubah terlebih dulu pecahan campurannya menjadi pecahan biasa
2 1/3 x 2/4 = (2 x 3 + 1)/3 x 2/4 = 7/3 x 2/4 =
7 x 2 / 3 x 4 = 14/12
karena pembilangnya lebih besar maka kita harus sederhanakan dulu, temukan bilangan yang dikalikan 12 hasilnya mendekati 14. bilangan yang hasil kali dengan 12 yang paling mendekati 14 adalah 1, maka kita tulis
14/12 = 1
setelah itu kita kalikan 12 x 1 = 12, lalu hasilnya kita gunakan untuk mengurangi pembilangnya yaitu 14
14 - 12 = 2, maka hasilnya adalah 14/12 = 1 2/12
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Multiple Choice
5/8 x 6/9 =
30/72
25/72
11/17
30/70
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Matematika kelas 5
Perkalian pecahan

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