

Kelas 4 Penjumlahan dan Pengurangan Berbagai Bentuk Pecahan
Presentation
•
Mathematics
•
4th Grade
•
Practice Problem
•
Hard
RIMA WULAN SAFITRI
FREE Resource
8 Slides • 0 Questions
1
Penjumlahan dan Pengurangan
Berbagai Bentuk Pecahan
2
Review Materi Sebelumnya
Jenis-jenis Pecahan
Pecahan Desimal = 0,75
Pecahan Biasa =
4
5
Pecahan Campuran = 1
4
5
Persen = 15 %
3
Mengubah pecahan tersebut
menjadi bentuk pecahan
yang sama terlebih dahulu
4
Cara
1.
Ubah ke pecahan biasa semua
Contoh :
0,5 +
2
3=
0,5 diubah ke pecahan biasa =
5
10
5
10+
2
3=
disamakan penyebut dengan mencari KPK
10 dan 3
5𝑥3
10𝑥3+
2 𝑥10
3 𝑥10=
15
30+
20
30=
35
30= 1
5
30
(diubah ke campuran karena besar pembilangnya)
5
• Cara 2
Ubah ke pecahan desimal semua
• Contoh :
• 0,5 +
2
3=
•
2
3diubah ke pecahan desimal
0, 50
0, 67+
1, 17
6
• Cara
1.
Ubah ke pecahan desimal semua
• Contoh :
• 6
1
4- 0,15=
• 6
1
4diubah ke pecahan desimal 6,…
Jadi 6,25
6, 25
0, 15 _
6, 10
7
• Cara 2
1.
Ubah ke pecahan biasa semua
• Contoh :
• 6
1
4- 0,15=
• 6
1
4=
25
4
• 0,15 =
15
100
•
25
4+
15
100=
Dicari KPK
25𝑥25
4𝑥25-
15
100=
625
100-
15
100=
610
100= 6
10
100= 6
1
10
(diubah ke campuran karena besar pembilangnya)
8
Penjumlahan dan Pengurangan
Berbagai Bentuk Pecahan
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