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Pecahan campuran
1 2/5; 2 1/8
2.) Ayo, ubah pecahan campuran ke pecahan tidak sejati, dan ubah pecahan tidak sejati ke pecahan campuran atau bilangan asli.
Jawaban:
1 2/5 = 5/5 + 2/5
= 7/5
2 ⅛ = 8/8 + 8/8 + ⅛
= 17/8
10/7 = 7/7 + 3/7
= 1 + 3/7
= 1 3/7
3/3 = 1
9/8 = 8/8 + 1/8
= 1 + ⅛
= 1⅛
3. Ayo, urutkan pecahan-pecahan di dalam kurung ( ) dari yang terbesar.
1.) (2/7, 5/7, 6/7, 4/7)
Jawaban:
= 6/7, 5/7, 4/7, 2/7
2.) (1/6, 1/8, 1/5, 1/10)
Jawaban:
= 20/120, 15/120, 24/120, 12/120
= 24/120, 20/120, 15/120, 12/120
= 1/5, 1/6, 1/8, 1/10.
3.) (2⅛, 2 5/8, 2 7/8, 2 3/8)
Jawaban:
= 2 7/8, 2 5/8, 2 3/8, 2 1/8.
4.) (3 2/9, 1 5/9, 2 7/9, 4 1/9)
Jawaban:
= 4 1/9, 3 2/9, 2 7/9, 1 5/9
4. Ayo, hitung hasil penjumlahan bilangan berikut.
1.) 3/5 + 2/5
Jawaban:
= 3/5 + 2/5
= 5/5
= 1
2.) 2 5/9 + 8/9
Jawaban:
= 2 5/9 + 8/9
= 2 + (5/9 + 8/9)
= 2 + 13/9
= 2 + 9/9 + 4/9
= 2 + 1 + 4/9
= 3 4/9